What is rundll32.exe? Is rundll32.exe spyware or a virus?

How to fix rundll32.exe related problems?
1. Run Security Task Manager to check your rundll32 process
2. Run Windows Repair Tool to repair rundll32.exe related Windows Errors
3. Run MalwareBytes to remove persistent malware

Process name: Run a DLL as an App

Product: Windows

Company: Microsoft

File: rundll32.exe

Security Rating:

This program is part of Windows, and is used to run program code in DLL files as if they were within the actual program. However, many viruses also use this name or similar ones. This file is also commonly used by spyware to launch its own malicious code. http://www.neuber.com/taskmanager/process/rundll32.exe.html 

Note: The rundll32.exe file is located in the folder C:\Windows\System32. In other cases, rundll32.exe is a virus, spyware, trojan or worm! Check this with Security Task Manager.

Virus with same file name:
W32.Miroot.Worm - Symantec Corporation
Backdoor.Lastdoor - Symantec Corporation
Trojan.StartPage - Symantec Corporation

Click to Run a Free Scan for rundll32.exe related errors

Users Opinions

Average user rating of rundll32.exe: based on 476 votes. Read also the 452 reviews.

  • 10530 users ask for this file. 167 users rated it as not dangerous. 21 users rated it as not so dangerous. 120 users rated it as neutral. 70 users rated it as little bit dangerous. 98 users rated it as dangerous. 75 users didn't rate it ("don't know").

All comments about rundll32.exe:
RunDLL32 is used to run DLLs as programs Alex
For some reason this program is hung in background and is stopping certain programs from opening. Ryan
Same meaning as Ryan. Program blocks some other programs from running and also blocks websites from opening. When process is closed, sites opens imediatelly.. Sid
Open it with notepad; search for text "padding"; if it is ther you an unidentified object; size of dll32 worm is 31,5 to 32 kb pete
All already written on Windows DLL Archive.  See also: Link Chris Korte
It does as Ryan and Sid have said, but it also inhibits Yahoo messenger from working properly as well. Mark
This program is part of Windows, used to run program code in DLL files as if it were an actual program. However, many viruses also use this name or similar names such as 'rundII32' (uppercase i appears the same as lowercase L in many fonts). It's also commonly used by spyware to launch its own code.  See also: Link Inuyasha
RunDLL32 is used to run exported functions of a DLL or EXE file...
Slows Windows XP from shut down/ log off. Ronnie
Rundll32.exe loads and runs 32-bit DLLs. Rundll32.exe comes with all versions of Microsoft Windows. If you are worried if this process is legitimate, check the .dll name that follows rundll32.exe. Spyware, adware, keyloggers, trojans, etc often hide behind the rundll32.exe process. N/A
Yes, its exactly 31.5Kb large.Viewed by Notepad its clearly, that the file has been modified - some "1337 artwork" is hidden in there. Also many "paddings" divided by an "XX" at the end of the file. I solved the problem, by booting in save mode, closing the process "RUNDLL32.EXE" and deleting the file.. untill now, it had no effect to windows. But IF, you can always copy the real rundll32.exe from your Win XP -CD. Since then, I had no more problems@browsing and starting programmes/games. Sid
RunDll32 was deleted and now I cant open my control panel JD
when you do not have a fire wall to stop it it opens a site and takes over your home page I do not remember wich one but it did it until I instaled zone alarm when it was in the list I did not give it access and then rest my home page and deleted the site but it still loads Berni
search high and low and found that rundll32exe can hide trojons and spyware and can also be trusted software that just uses this line to run unknown software Stephen Eccleston
causes the CPU to work in full load or performace shoots to 100% n makes the system dead slow, when stopped works normally  See also: Link Binish
it prevents windows to shut down correctly, needing to shut down manually
These data is creating from Windows, if it where not there, we can not open our contros panel. BlackMaster
There are some legitimate uses for (the real) RUNDLL.EXE for example, the nVidia driver settings control panel uses RUNDLL.EXE to load itself into the system tray. If you bring up the context menu on the nVidia system-tray icon and tell it to exit, RunDLL.exe will most likely disappear from your process list as well. Note that if you ask the tray icon to exit, the nVidia tray process will no longer load on startup. To re-enable it, you must go into DisplayProperties/Settings/Advanced/GeForceXXXX/TroubleShooting/ and then check the "Display nVidia Settings Icon in Taskbar" checkbox. John
It can shut down your computer, and screw it up, as well as overwork your CPU,a nd you computer may get really slow or crash. Also, It makes it so you can't print ANYTHING, or burn CD's. It also opens a trojan and may download other bad files to your computer. Terranwolf[.com]
it kept erroring, and slowing down my computer. so i got rid of it...and can't open my control panel!!! so i would definitely not recommend deleting the file...but certainly find out how to tame it! JPac
Some users or should i say malicious users, are using this prog to initiate unwanted dlls. E.G. Swap mouse buttons and log off a user on logon. Snipper
when i start my system cpu usage is going nearly 99% because of rundll32.exe using nearly 85% of cpu venkatesh
It try to locate itself to my startup folder, I guess it is a virus Norman Lo
do i need this proces to use my programs?my msn doesnt work klapp
deleted and now cotrol panel is inaccessable! Liz
Microsoft DLL to run DLLs as programs, contained in Microsoft operating systems. But: many virus/worm use this filename too, have a look at the following link  See also: Link Jan
Without it, I cannot access my Control Panel or any of my Display Settings. anonymous
RunDLL32.exe is in itself harmless - it's a neccesary part of Windows. The problem comes from malware/badly coded programs/etc. These commonly use RunDLL32 to open popups, run keyloggers, etc., but it is also vital to many ligitimate processes. Don't remove it - just try to find out what's running it, then remove that. In the meantime, kill the process using Task Manager. Remember, something legit may be using it too, so use info like the "Mem Usage" & "CPU" to guess at which it is... generally though there'll only be one "rundll32.exe" process running, the bad one, if indeed any. SirPavlova
I had a hard time with Rundll32 taking the place of Explorer on my hard drive. Remove VX-2 with ad-aware fixed the problem. KR
each website is saying different stuff... rundll32 is a windows file.. and one website said it even contains time n date information.. is it harmful? when i check my processes it runs on 100% Blabla
once deleted it has a back up file to add to the start up undeteted so that it puts a lock on the control panell but i do not worry abot it that much because i am staring to find away around it and learning to kill it because your virus protector will normally skipp over because it thinks it is microsoft certified like some of the drivers and anyway it is like a old dos command.like all viruses that i have found i play with them on my older computer.if you want to learn more about a virus get a older computer and down load it in to it and start playing with it and see what happens william
I know that if I don't close it from my Close Program Box I can't play Freecell. I wish I could understand it enough know if I should get rid of it. lucy
rundll32.exe is substantial part of MS Win operating system and nessesary to launch all dll's - compiled Win32 programs (both good and bad) DO NOT REMOVE! Just YF, Programmer
In my case it was part of the nVidia Desktop Manager functions, nVidia uses it to launch the tweak tool in the sys tray. If you have this and you have nVidia you can probably relax. If you do not have nVidia it is likely you have a worm. mooter
damned slows the machine, can't even open new windows properly and programs and webpages load a lifetime long... what the heck...
Here is a site for more info and resources on RunDLL32: http://www.dx21.com/SCRIPTING/RUNDLL32/index.asp  See also: Link ChuckO
Zone Labs asks me if I want to open it. I say no. The computer doesn't seem to be any the worse for it Leon W
You can't STOP the dll when its running, everything still works fine. Do not delete it! Guido
only operates on windows other and 2000, XP, and 2003. Im currently looking for more info, but i have XP and rundll32.exe is in my processes. My computer keeps restarting for no reason and sometimes does as soon as windows boots up. Jonathan
it slows down my computer and doesnt let some of my programs run correctly cruzer3004
i also deleted it by accident and can't use my control panel! How do i get it back? plz help Andrew
In my firewall I get RANDLL32.EXE is that the same thing as RUNDLL32.EXE It keeps on poping up on my firewall it won't stop, and I don't want to let it in, what should I do I can't get rid of the popup dude
Its New Dot Net Spyware according to My Firewall!
its really anoying it makes my comp really slow anthony from new zealand
check the properties it's orgin is smart link.
As others have stated "can`t open control panel/add remove programs etc". My question is "how do you remedy this problem?" Jimbo
MANY viruses are hidden with this name like run32dll or rundii32... i was infected with rundii32.scr, and it eats about 20 mb ram and goes with your processor somewhere at +80% marius
it is used to run hotmail and msn...now i deleted it and i cant use those things..i NEED it back and i dont know how to get it? ahh amanda
It is a necessary program for the dll librar to process properly. If you are having problems or errors due to this file, it is not the file itself, but a virus or trojan which is hiding behind it. Oskar Greye
As I have seen some people directly deleted it ! but first check when the process is ubicated. It is possible to see the rundll32 when you open the contro panel ! so do not deleted it , Win needs the process to work right. Festratocastro
in Win9x, it ia a necessary process -- leave it alone. In xp and other os, it is malware! Get rid of it! TurboP
I have 2 RNDLL32.exe processes running. Is this normal?
This file takes over my entire CPU , I can't make it go away,
Does anyone how I can reinstall the file "Rundll32.exe". Is it possible to send the file by mail (wilde.fnm@bluewin.ch) so that I can copy it on to my pc? Frank
Rundll.exe is required to execute a DLL as an application, a kind of which the control panel is. A
i deleted the fine and nothing from my control panel will open now. keeps telling me rundll32 is needed to open programs, wish i can put it back now Tim
its used to load 32 bit libs, it sucks, the hour glass beside my cursor keeps popping up and going away really fast, and in task manager, it opens and closes really fast making my comp really sluggish Dr.Evil
most of those files are adware ,spyware ,or viruses howard
It's using 9% of my CPU , a 3Gig Barton core XP. running 18 DLL's Douglas
3 or 4 of these files keep popping in & out of my task manager and freezing up any program I'm in. If I get rid of it, the programs run normally Sammylou
Same as Norman, When ever i start the PC it says it can't be found, so i guess that it told the PC that it should run it. :-S
My Rundll32 is modifided with this padding , but it doesnt run in the taskmanger and my system doesn't run slowly. I deleted it and needed to install Windows because Nvida CP didn't work and so on.... Max
This file, on certain systems, does pretty much everything the other people say. Rundll32.exe is a windows system file used to make .dll files run as a regular application and, if deleted, you may have minimal customizable options to your computer. Control panel, user account prefrences, and more will not run without this file, which makes it required and a perfect target for trojans, spyware, etc.. To get your computer running back to normal get an anti-virus scanner that will try to repair system files but DO NOT remove this file. A link to a good virus scanner thats free is below.  See also: Link Mike Z. G. (Delinquent986)
There seems to be 2 versions of rundll32.exe The harmless windows origin and the dangerous trojan one.. Kill the pestile immediately The right one is in sys32 dir and the evil one elsewhere in your windows or system dirs.. Victor Motas (Finland)
I had two instances of "rundll32.exe" running in task mgr on windows XP. It turned out to be connected to nView from my display adapter install. I stoped it by:: Turning off nView Desktop Manager: Display Properties/Settings TAB/Advanced/GeForce TAB/Left Pane..Desktop Management/Right Pane..Disable/OK/Display Properties OK/....That did it for me it's not there anymore. Daniel "Dtoolman"
this dll file runs my cpu usage up to a 100%!!!! EAA Alladien
RunDLL32.dll is most commonly used on systems with Nvidia Graphics Card. On these systems, it is most commonly referred to as Nvidia Quick Tweak. Just make sure it is in your Windows/system32/ folder and that it is properly signed by either Microsoft or Nvidia. Druid Zeb JP
RunDLL32 is the means by which an entry point into a DLL can be called. Such entrypoints could be good or bad, your guess is as good as mine. Asking if RunDLL32 is a virus, is like asking, "Is Windows a virus?". Many programs use RunDLL to execute detatched processes. These hang up as easily as any other software, but usually you cant see them on your desktop. If RunDLL is causing your computer to run slowly you need to find out what is causing RunDLL32 to be running. Andy Ash.
I suspected something fishy with the file, when shutting down windows 2000Pro it would always be hanging around in the background. It took away the ability of some of my programs to run, once I ended the process in the task manager everything worked fine. Webgrrl
rundll32 was constantly running and slowing down everything I tried doing, avast antivirus recognized it as virus and several spyware programs recommended to delete it. My computer started working as soon as I shut rundll32 down. After I deleted it, everything works great, except I cannot run .av movie. So I guess it is true, there are two types of rundll32. Vesna
A necessary, but maskable executable Racimo
I am also trying to find out how to fix the problem.Something easy to do so that it does not slow down your computer, is to give it low priority by right clicking it in the task manager window.Just until you find a way to get rid of the problem Kappa
When it runs my notepad, outlook express and my frontpage do not work and when I disable it I cannot connect to my ftp or check for email. Johan
rundlil32 is hacker with the "i" Ian
I have PalTalk Messenger 7.0 and Rundll32 always messes it up. My webcam works fine (for example Logitech ImageStudio works) but then when I try to go on my cam on Paltalk, I get the mesage that Rundll32 has performed an illegal operation and then my cam never loads. Eko
Its needed to run the date n time function, mine wont work because my virus remover removed it so i need to re-download it TC
You can just close it manually from taskmanager. It isn't such a big deal.
windows needs it.
caused my comp to no longer boot Matt G
It slows your system down 100% of cpu Killer
wont let me change my desktop wallpaper just helps crash program rdl Beers
After deleting Rundll32 from my computer Internet exploer along with the control panel. Simon849
it is constantly slowing down my computer and i have to end the process every time I turn on my computer Jill
rundll and Rundll32 are not normal for windows XP machines in the task manager. If so, it's a virus and use a virus remover immediately
it pops in startup monitor (very useful piece of shareware) and i can keep it from loading all it's applications but it still loads a browser hijacker and a couple other bugs...I can't catch it with Ad-aware or with spybot
I have 2 of them and I know that there's only suppose to be one --- but my AVG anti virus doesn't detect anything and as far as I know it doesn't seem to be doing any malicious thing.... but I can't help but feel it is as I have 2 of them and my bro has 4! I'm sure it's not good but I don't know which is the legit one from the fake one..... dg
Only dangerous when corrupted, it's fine when first installed, so if you do have a problem, delete anything under the name of Rundll32.exe (and program) and then copy the same file back to where you deleted it from your XP Disk, for example. But the majority of the time it is dangerous, so if you hint corruption or worms, re-install the files! BeanZ
Each time I go to Configurations and click on any of these items (mouse, printer, network, printers, .etc) I get the following message: Cannot find the file C:\Windows\rundll32.exe (or one of it's components). Check if this pad or file name is correct and if all neccessary libraries are available. STOP. By consequence I cannot go any further to change e.g. my screen saver .. Frank Witters
I Agree!!!! rundll32.exe is substantial part of MS Win operating system and nessesary to launch all dll's - compiled Win32 programs (both good and bad) Do not remove! Just a victim
I don't much this file, the only thing I know this file will be use by certain application. The problem now when I reload Windows it seems its run 2 "Run32dll.exe" Jemi
it sucks, it hacked my ie. my norton searches it, but cant delete it. i got it from COOLGOOSE.COM toxic
Rundll32 is a part of windows,The link below is a free process explorer. Better than using task manager!  See also: Link Don
Rundll32 is a part of windows,  See also: Link Don
This file is a virus more! Der with start from Windows emerges Okan Yildirimlar
The legit rundll32 is designed to be invisible in the NT/2000/XP task manager list. If you see it running on Task manager it is a trojan horse given the name 'rundll32' to mislead you.
this is a system file if does not works you will get an error.  See also: Link Ashish doshi
I never had an issue withit until I installed a nvidia card. When my computer sits idle all nite everything freezes when i want to open them. Mike P.
I had deleted this file because spyware use this. But almost all windows operations use this file also. you cant run control pannal without this program DL Alvis
my computer says it can`t be found, and i need it to run programs in control panel. how do i find it, it is or was a part of my windowsxp. elaine
Itīs a Windows Utility to Optimize the System in backround alles_wizzer
i have 10 to 15 rundll32.exe running and they S-L-O=W everything down e.g webpages games and stuff i want todelete it but i am going to try going round it anonymouse
i know that since i have noticed it on my task manager my computor wont open most applications and i dont know if it related but cant get onto hotmail.com. dave - uk
it allways comes out when i turn my computer on Tony R.
run.dll itself does not appear to be dangerous. the trick is to determine which .dll files are being run and which of them are dangerous. in my amateurish (and probly) dangerous view. tgesix
I have this file on my pc and it blocks any internet service from working When ever you try to connect to the internet using explore or open any network application it just block it. Even when you do an ipconfig it doesnt give a gate way ip or any real public add such as .67..Iam still trying to fix this on my pc and need help Singh
Common usageUsed to set taskbar Display Icon Properties (Advanced) Can be abused by intruder Trev
Rundll32.exe is part of the win operating system used to run dll as apps but there is another file with the exact name that runs and cannot be closed down through the task manager. If you do close it down it does not matter as it will run undetected and still and cause your CPU to falsly run at max CPU power when you access your hard drive or other IDE devices but the CPU is not running at full but windows thinks it is Rob
Rundll32.EXE is a Windows system file used to run a section of a dll file as though it were a standalone exe. It is only dangerous if maliciously used, or infected with a virus. Mid
My comp started working so slow and I just fond out runddl32 working on the system. It is a virus or not? Ann
raccourci exit windows+rundll32
XP (as well as NT and server 2003) have a nifty little system file checker tool: go to Start Run sfc you can point it to the file you want to check, and it will re-copy it in it's original version from a cab file on your hard disk, or from the install CD. I'd like to know how to see what is invoking it
Generic App
If found in startup list, delete it without delay viv
Rundll32.exe is a executable which is neccessary for windows environment. It is always present in c:/windows/system32. It may also some times found in other places which must be a virus. In case of virus it's always in mix, upper and lower case letters combination. RunDLL32 is used to run DLLs as programs.This program is part of Windows, used to run program code in DLL files as if it were an actual program. Rundll32.exe loads and runs 32-bit DLLs. I suggest you not to play with Rundll32.exe Ganesh Sandhan
Rundll32.exe has performed an illegal operation (every time I start my computer) and My Remote Control for ATI 8500 DV does not load. Ivens Martins Góes
normally an essential windows file, but if it appears on task manager its probably been altered by some form of virus. In my case some suspect active X plugins altered the file. Everytime i started up IE i got re-directed to a site with popups tryin to get me to execute some dodgy exe. Solution: simply used system restore to reset the dlls to default state. The fact that the virus hides behind rundll32 makes it VERY difficult to detect/remove with common freeware programs (addaware, spybot etc) mrT
Just wondering most things you all said were in c/windows/system32 isn't on my computer. Any ideas? Ronni
I know that I need this file to open my control panel but it is apparently downloading viruses into my computer so what can i do! spencer
Use Process Explorer to see the Image... the Command Line box shows what called it.  See also: Link TheoReticle
RunDLL32 is basically a process to start other required process, most of the time called RunDLL32 executing other process / processes is left incomplete as some error or intializing called process fails, mostly happens in windows application, No harm in manually ending the process as it unfreezes the master application. Sanim Samnani
I deleted rundll32 after a spyware registry website said it should be deleted and now I can't open certain programs. Does anyone know if there is a way i can get it back? june
When mem usage gets over 120mb, printing starts to get screwed up. Kill the process and all returns to normal for several days. Then is returns and slowly builds in memory size again. Luke Barnes
It keeps invading my computer with a note that says it is an illegal operation.
rundll32 is slowly killing my pc, i don't know what to do i deleated it in safe mode and i deleated it out of the startup files but it keeps coming back. It's stopping me from logging into MSN messenger, it's messing with my dirextX files and some games cant render properly, it's making my computer dead slow and theres 5 processes running all run32dll and it was not there before. And my control panel wont open but i fixed that by reinstalling windows with a new windows folder. Leon
I don't know what it is, but whenever it seems to be open in my Task Manager certain programs would close at random, so I would close it, the program would work. A few moments later rundll32 would REopen and the program i was running would randomly close again. So I searched for it, deleted it, but it kept coming back. So I finally found a way to get rid of it. I can still access my control panel, however. Miguel
rundll32.exe appears to be a browser hijacker. It appears each time any explorer page is opened and also on reboot. I have tried many ways to defeat this trojan and none have long term success. The only way is F/DISk and reinstall your life then never go online again brian G
My brand computer has been acting pretty strage recently. I usually run my two spyware program and virus scan, but this time they found nothing, so i looked at system processes. It shows different rundll32.exe programs. Isn't there only supposed to be one? BigBird
Well I know that my computer wasn't shutting down and starting back up by itself before I came acrossed it .Im running xp system and when I goto task manager and end the process of rundll32.exe it stays away until I log off or restart the computer. Jay
Part of Windows Operation System. Lost this file from my system one time. Couldn't open anything in Control Panel. Solved the problem by downloading good RUNDLL.EXE from Internet. No problems since.Make sure you get the good RUNDLL.EXE. John Coulson
seems to have the same date 5-11-98 as other win98 files - i disabled it in start up and moved it to another dir and things run fine without it so far... if it's absense stops hotmail and msn network it's probably a good thing ;) Matt Gilbert
i hate it. it causes my computer to run at high CPU usage and the program rundll32 just appears spasmodically. I'm convinced that it can't be detected 100% of the time. malerick kisaragi
I have 2 running all the time. Mine is located in C:/I386 (I have a Dell computer) I do not show anything under Windows/System32 ... shouldn't there be one in System32? Doug
If Microsoft (possibly) games are uninstalled without using the correct uninstaller rundll gets corrupted and lost... Ian
It HELPS your PC Run Good. If you Only have the one RunDLL32.exe File in your C:\Windows\System32 Folder.
Part of windows, safe, do not remove it. As usual beware of apps with similar names
rundll32 is a file used my windows to load processes onto the windows explorer vishnu ajit
most of you are idiots and your comments are useless fool
good program you can run dll as a program too! FuzzyAndrius
good program you can run dll as a program too!  See also: Link FuzzyAndriusFace
I got worried when I found two cases of this in my task manager. One will use the library when you start add/remove s/w in control panel, the other turned out to be specifically Nvidia - if you right click the desktop/Nview Properties and disable Nview the rundll32 will disappear from task manager. I don't know of an easy way to check which program is using the library, I uninstalled my software to the basics and then started playing. If you can workout what uses the library and Adaware, Nortons or Spybot don't find any problems you should be okay. Aarooni
not knowing anything about the rundll32 nightmare except i cant access control pnl.it caues pc to slow down,my homepage has a mind of its own,some software acts up like a kid in church and i recieve error mess. cannot find rundll32exe.. this is what led me to this site,to find out rundll also causes confusion among those outside the pc.Is there an answere as to FIXING THIS DEMON? I cannot find rundll anywhere . do i need to install it? How?Where? also just to vent windows me SUCKS as bad as this GATEWAY computer HEIP Sledster
To solve the issue I ran a search using the full name, rundll32.exe. I had 2 applications and 4 PF FILES. I renamed the PF FILes by putting a z infront of them (so i could re find them easily if I wanted to reverse the process). MSN warned me that I was messing with a necessary Windows application. After I renamed the PFF FILES, they no longer were recognized and my problem ceased. My problem had been a lengthy soft shut down. Hope this helps you guys. Jim
JUNE.. simply put your Windows cd in to your cd rom and restart your computer, Make certain that your CD rom is being the first device read as per start up options in your BIOS. If you are unsure on how to change or check this, please ask a friend that is familar with boot up options. Anyway, having your windows cd in as your system reboots you will be promted to reinstall windows. Doing this will install windows with all drivers and your missing file.
This is a system tool that loads dll files into memory so that they can be accessed by other programs. If you have problems with rundll32.exe, the problem is not the process itself. More likely, you have infected or malicious DLL files in your System32 folder. rundll32.exe IS NOT DANGEROUS and SHOULD NOT BE TERMINATED OR REMOVED. Alex
I had it in my system, and showed up as a warning that it was a potential danger and to remove it (mcaffee), so I did, But kept getting a pop up by rundll32 every time I started my computer. Had 4 days of tech support and finally was told it was a virus and had to have my comp. completely cleaned and reinstall Dell.
rundll32 allows other processes to run. YOU NEED THIS FILE. What you are seeing are malicious processes that run under it. The smart thing to do is run an anti-virus/anti-spyware program, and don't delete random files. Moniker
This file comes with windows, but it can sometimes get infected. If you have a virus scan that says it's an adware or virus let it delete it because chances are it's not the clean file. Jonathan
If it is in the Windows root folder it is a worm, if it is in the system folder it is typically OK Spacekid
legitimate is necessary to use windows, spoofed file is related to spyware, look at the filepath. Jesse
For some reason, all of my problems went away as soon as I deleted this Mark
rundll32.exe seems to be used by my nvidia panel in the taskbar. frank_rizzo
stops your computer working properly arron webb
i show in my computer i dont want it nomar
Enough to be dangerous.. lol Ultimate_MCSE
RunDLL32 is a windows process used to start other DLL files  See also: Link kev
Hazardous if combined with certain programs. May cause errors. Dummy
i don't think that it is harm for a computer .it also helps in working a computer properly by giving a supports to a various program nimar
rundll32 is a file used my windows to load processes onto the windows explorer Sameera Gayan
it just pops up on my desk top when i star up windows i just click on ok and my computer starts working fine leon
problems with programs not responding 'got broadband kept being disconnected ,everything seemed slower so i downloaded a fresh rundll32.exe from net .everything now is alot quicker  See also: Link joe
not dangerous  See also: Link
RUNDLL32 is the process used when deleting files from your internet explorer options. If you delete it you will no longer be able to access Internet Options from the Control Panel or from your IE windows. Steve Burke
rundll32 is genuine MS program. But I had a problem with it constantly using up all my CPU. I think it was being used by spyware on my laptop. Solved the problem by updating/getting security patches for all my MS applications especially my Office apps. see link  See also: Link fom
rundll offers an entry point into a .dll file which otherwise don't have an entry point of it's own.If the .dll file is a malware meant to screw up your PC then when rundll32 activates the .dll it affects your PC adversely.As such rundll32 is harmless.The best remedy is to find the harmful .dll and remove it and not to delete rundll.  See also: Link Darkspawn
On my Windows XP CD ther is a file called "rundll32.ex_ " bot not a "rundll32.exe". When i remove "rundll32.exe" from my system32 folder nothing is different because there is still a "rundll32.ex_". When i remove "rundll32.ex_" from system 32 folder then i cant open settings for windows and 3d card. Donar
Hit Ctrl+Alt+Del - Click Processes - find culprit Rundell32.exe LJ
Install a firewall. If the process rundll.exe is cought trying to access the internet delete the dll file or do a system restore. You do not have a restore point for your system, simply get your install CD and search for the file. Hexonflux
While rundll32.exe is a windows program, it's also a front for dangerous material. I've found that it sometimes rests in C:\WINDOWS\Prefetch , and if you delete the imposter file it may help your problem a bit. Anonymous
I have the Rundll32.exe blocking up all unused processing power, so my PC would run at a constant 100% capacity, which, needless to say, made it very slow. I too tried deleting the file. While that didn't cause any problems, it didn't solve any either. None of the anti virus and anti trojan programs I'm running can find the problem... Peter, Denmark
This is from Microsoft used to run DLL(W/c code is EXE) as an EXE It will not harm anyone if and if some1 planted a dangerous program and LAUNCHED USING it. It's like RUNDLL32 is the CLOAK for the dangerous program. It's not harmful it's just that people are so dumb don't know things. people
It is in partnership with se.dll when operating off of trojan.start page rendering IE useless. My yahoo messenger does not work right sometimes. I am still in the process of repairing the damage it has done. Brandon
rundll32 was deleted an i cant open anything in the control panel how do i get it back tyra
Well i am suffering the same problm with this file I cant change date and time and cant delete or add new programms cause the system is continously giving eror that rundll32.exe not found even its there donno what to do ...... Sup3r
all it does is not let me delete history Jordian
when i quit it with task manager my pc runs smoother and faster. agfadfgh
i deleted it and not my computer runs great
the presence of multiple copies can mean the difference between amateur and professional infections, deliberate tampering, even in jest, may result in dramatic change in performance. instances of hardware heating have been related. sugar
micosoft use it to stop your firewall on internet explorer if they find out your xp program is a cope so beware they did it to me so now i have to use firefox because i have no firewall coz of micosoft tiddy
this is avery kileer file for the pc. i can't open my control panel. and she opens for me a window that saies not avilabiel arron sss
It seems to be good thing for running zombies as DLL :) Archer
systemfile havoc+
rundll32.exe in and of itself is essential to your Windows opertating environment. DO NOT DELETE RUNDLL32.EXE. Some people here are providing really bad advice... XLR8
It stops certain programs from working and ever time I click on a program it brings me to the "open with" screen and then I'm stuck Chris W.
do not delete this file, it is required by windows. if you boot in safe mode and delete it, windows will automatically restore it from your cache. jimmy j
there are 2 rundll files, one is rundll, and the other is rundll32. they are there so windows can run dll files as applications. the file may have been corrupted or replaced some sort of malware, or it's running a malware dll file. if that's the case, i'd recommend updating your antivirus program and running it, if that doesn't fix the problem, search for a way to correct the specific problem you're having online. but don't delete the program, your os needs it. Janie
Mainly an annoyance i have two Rundll32.exe in my windows tast manager i have done multiple full system scans with software like Trend micro and found nothing Yet it does take up it's share in unused prosses though it's only taking up a total of 10K mem usage. my cpu with 32 Processes is 0% even when i'm online (it kicks up to 4% when i move my mouse Nor
Oh MY GOSH you guys need to check out the ProcessExplorer app that one guy posted. This will answer all your process questions forever, whoever wrote it needs to get paid for it... Kenny
 See also: Link Moo
I faced Rundl32 and eliminated it Rundll32 is a question? nicval
guess what go in task manager and stop running rundll32.exe then delete it from system 32 it works Ultima
You can't run it by double clicking on it in Windows Explorer. Joe
just end the process when u startup! Onion_Fu$ioN
Been infected, slowy killing Computer Xltima
When i shut down my computer, an error message appears. I think Norton has something to do with it! rob
Doesn't efect MemUsage, gives more protection when visiting sites Sitejs
I just know nothing much about this file Donkey
it IS windows but it can also be modified- sometimes my computer gets slow and I find it running ( go to taskManager) - usually I simply stop it from running and the computer gets back to normal speed , in my case broadband - I also do a clena up at the same time, just to make sure nothing bad came in Ed
Applications (code) can be called directly from DLLs and will thus appear in the process list as RUNDLL32.EXE when they are really something else, like NVidia Display Manager and so forth. Winternals, www.winternals.com or www.sysinternals.com offers a beautiful utility for closely examining your process list. I highly recommend it if you want to learn what each RUNDLL32.EXE in your process list is doing.  See also: Link Garrett, Phoenix AZ
this file has two version, on is harmless, signed by Microsoft Corp. however the other is a dangerous virus. it seems to be a FT file... rang
On my XP mediacenter it is used by the NVidia taskbar. Closing this taskbar = closing rundl. Dirk
I disabled this programme from "windows, run, msconfig". Now my computer won't startup. I cannot even turn it on. I can't get to a point where I can change the settings back. My computer is thus rendered useless until I get another copy of windows. Does anyone have any advice, It cannot get past Bios - can I do anything from there? I don't have my origional copy of windows on cd anymore. I know this is the only thing wrong with the startup, I'd like at least to get my documents off the hard drive. Advice anyone? Would be much appreciated. hazel
this causes to reboot ur system without warning, just delete it kel
I have the trojan or worm in my computer, I have nVidia and there are 2 rundll32.exe process running the virus has got 4MB memory usage but I think I'm safe because I have Zone Alarm but don't know how to delete the virus Anonymous
search for trend housecall on google, run a virus scan there. dont remove the valid rundll32 its part of the operating system, what is using rundll32 is what is causing the problem. .. mispelled or improperly located rundll32's are probably malicious programs. but use a virus checking program to find and fix. fryyyy
Rundll32.exe is neither normal nor a dangerous one, but need attention as early as possible. Otherwise It will become dangerous Moloy Ghosh
Can be used for dll injection attacks, otherwise used by windows for converting dll run programs into actual viewable apps.
After stuggling with this for many, many months, I think I found a makeshift solution. When you find it running in your Windows Task Manager, right-click on the process and scroll over "Set Priority." Downgrade the priority to low. I have used this several times. Sometimes is still runs, but allows everything to run at normal speed. Other times, it goes away outright. This doesn't answer the question, WHY ARE YOU SCREWING UP MY PROCESSING SPEED, but does allow you to work normally. DRich
rundll32.exe is like an adaptor. Normal dll files cannot run on their own, so this temporarily converts it to an exe in the system memory while it runs. The control panel is a dll, and so is the internet options thing. That's why it doesn't show up in the taskbar. The dll it is 'adapting' is the evil/good thing. John
it stops my internet from workin and once i end process tree my net comes back... Matt
This file is needed to open Control Panel, Desktop Properties menu, and DLL's for Windows, when deleted many programs will not work anymore. Soul Eater
This is a Microsoft file. Make sure you have a backup copy. People will often try to use this to make it look like Microsoft Windows is doing something. Find out what Dynamic-Link Library is being opened. Mr Icekirby
found the rundll32 file and a rundll file, both of which were on as applications, in c:\windows, but not in either c:\windows\system or c:\windows\system32. Would this make either of those i found trojans? kernit the frog
rundll32.exe is a legitimate process used by Windows operating systems to run the Control Panel, and several dialogue boxes (such as the Display Properties dialogue box). Terminating this process results in the inability to access certain Windows functions and settings. Do NOT delete this file — doing so will result in disabling certain functions of Windows until the file is restored. Christopher
My rundll32.exe file is 32.5kb 36kb on disk? I think it's somehow infected .. what should I do? Nate
rundll32 is a original part of windows it comes with the disk it should be in your system 32 folder if its found elswhere it is lickely a virus. if u only have the original one in system 32 and are getting errors related to it a separate virus may have damaged it.if u only have the real file and there is no problem leave it or u will lose your control panel or any programmes that are using the file to run. zap
If running it allows full screen pop-ups. When closed, no more pop-ups. Experienced this on numerous occasions. Kevin
you can find out which dll's are runnig behind rundll32 with 'dllshow2000' tomskie
you are probably looking at rundl132.exe (rund el one 32.exe) this is a virus/trojan. Copy the file name, paste it into wordpad and change to a font where 1 and l (one and el) are displayed differently.  See also: Link Xapp
when i try to kill this process in task manager my computer restart.. oliver
it stop my computer from working properly... ! can someone help me about this... after i had this file, my anti-virus stops working and other programs. i can't even play the Sims :( i tried to put the restore cd but its not working.. i also tried to reinstall the antivirus but it can't.. i really need your help... ~MaD~
The file is used to run dll files. The dll will be ran either if it is harmfull or not. The fact that it is hidden behind 'rundll32.exe' makes it difficult to detect by scanners. Find out which harmfull dll is using 'rundll32' and delete that one. Also check if there are more files that look like 'rundll32' by using the search function, as the only valid one is the one situated in c:/windows/system32. Grtz Tom
not actually dangerous, but for those of us using win 98 and 2000 its so annoying. rundll32.exe causes an error loading various programs (ie, messenger, and some media applications) . for now ctrl/alt/del and end its task until you fix the problem at its source (get a new firewall while your at it) A. Doner
I installed an NVIDIA Geforce 7600 GS. I recently found that if you are running the new Control Panel it will put a rundll32.exe in your Task Manager. If select exit from the tray Icon for the NVIDIA Control Panel, the RUNDLL32.exe will go away. This is legit. I thought it was a virus/spyware/trojan but my spyware and antivirus programs did not detect anything. Thanks to John's input here, I was able to test it to make sure it was a legit RUNDLL32 action. Joe
I delete my rundll32.exe and now nothing i working, someone know how I can get the program again? Louise
rundll32.exe is ok. runDLL32 or rundLL32 or Rundll.exe are dangerous. Tomas
i believe my MSCONFIG is messed up by Rundll32 because it also has a file called "Installer" that is loading up with it at start, i can play any games because of it R.J.
found it in my musicmatch, system32 and windows servicepack files........weird. I think its legal, but theres those bugs that always use this name. i recommend that u use zonealarm and restrict this process from working, because it aint a vital thang to run windows. XGeneration_Gamerz
Rundll32.exe is a required OS component, and should not be deleted. Even though viruses and other malware can use it to run malicous code, it is required to run dll(s) from the OS & 3rd party apps If you did delete it, go to the windows setup CD, open cmd, type expand X:\I386\RUNDLL32.EX_ (X:\ would be your cd drive). That should overide the previous rundll32, or add it again (Restart after you do this). Use Spybot's process list tool and you can determine where the processes are on your computer. Also: rundll32.exe only runs when a program invokes a DLL. It don't run all the time. robertunes
i use pcview its just like the task manager u use. i find 2files running on memory a "rundll32.exe" and a "RUNDLL32.EXE" Im always killing the one in caps lock but no antivirus can find it and delete it ... in c:\windows\system32\ there is only 1 rundll32.exe the one with no caps open ....ad-aware, mcafee and norton cant found anything wrong but i know there is something with the "RUNDLL32.EXE" giorgos
I had control panel open and when i closed it through task manager it closed control panel i really doubt this can anywhere near bad Phillip
My CPU wont find it in windows/system32/, but i can go in and see it. Now I cant open all but 2 programs, not even system Doopypon
rundll32.exe is perfectly safe if it is the Microsoft (real) version. I suggest you leave it be, deleting it may be problematic. Alex
I right clicked on file and chose "run as" I then selected a user (me / admin is what I chose). I then was able to open files on CONTROL PANEL!. MD 20/20
the rundll32.exe is not a dangerous file. this is a system file used to exit from windows. this file is also call in ".bat" file if need to user to shut down the system. sandesh magdum
Can't delete it, it is Microsoft run a dll as an app, if you delete it, Control panel, right click my computer, etc....can not open it in any profiles.... Henry Chow
i cannot restart my system. The process rundll32.exe do not end. i think this is a virus rahul reddy
This file is NOT dangerous in any means. You simply have a virus that is using the file. Get rid of the virus, get rid of the problem.
It's an essential Windows file - systemfiles.net -  See also: Link Ivo
This file is not dangerous, but it can be infected by viruses, use a virus scanner to detect if there are viruses in the file. It is needed to run dll files, thus needed for just about any program. Ruben
I think this seems very suspicious. I always terminate the file when I see it in the Task Manager.
it runs the menus and the windows that dont show on taskbar (like the visual propertys window that lets you change your background and screen saver) it is a vital part of windows if you have a grudge agenst someone you delete this file and his computer will become hard too use and they will have to reinstall windows DO NOT DELETE THIS FILE! chris scarber
If you are running xp pro you can open a "command prompt" window and type tasklist /m /fi "IMAGENAME eq rundll32.exe" C:\rundll32.txt then go to your c:\ drive and open the text file. The old one out is the rundll file.  See also: Link Malcolm
i have this two rundll32.exe running on the task manager , i found the fake one but i cant delete it .dam i hate them
I got virus and when i remove it, i delete the rundll32 as well. Then i can't open most of exe program : . I dunno if that's the problem, but when i download the rundll again my program can be open normally T_Ta Marine
if i ALT CTRL and DEL and lookin Processes....the RunDLL32 is under Owner instead of System....i have found no use for it so i just end task and it does nothing but i'm running Windows XP so i don't know if that has no thing to do with it Clint
i had a virus on my computer that used rundll32.exe to interfere with stuff. I could tell it was the problem because there was more than one rundll32 processes open on Windows Task Manager, and when i tried to end the process it would reappear on its own. Steveo
i can't open my control panel without it master
Was infected with "Virus Burster"--after ending rundll32.exe, problems ended. Control panel/display settings still work fine. Cirus
Its true, the NVidia System tray runs this program too. When i exit the tray, the program stops
Caused everything to be very slow, when ended everything was ok Nicole
If Iīm in a game and sometimes exit to desktop every now and again my CPU then gets used up by rundll32.exe and i end the process and it goes back to normal O'G Chris
use process explorer to replace task manager  See also: Link D. Murray
On my system the file is located at $WINROOT\sysWOW46\rundll32.exe with the ctfmon.exe. I am running a WIN XP Pro x64. Does anybody know, if it is correct in this folder or is it dangerous then? cypher
Mine is legit, it;s been there since my computer was built and its been reformated many times and it still has the same date. Myles
Ok guys, this whole thing has to be put to an end. rundll32.exe is NOT a virus. it is simply an application which executes .dll files. However, if this process were to be terminated or hijacked by a virus, the result would be internet windows and other programs that open at random. These also open when your computer boots up. It also results in the inability to acess certain programs like the control panel. So unless you get a popup error saying "rundll.exe as an app has encountered a problem", dont worry. If this happens, seek help. Bravo
If you are on an IBM laptop it is the battery optimizer that is making your cpu run at 100% if you download the new version and install it you are golden! Promise.  See also: Link mark the man
This is the file used to run dll files, and it supposed to be on your system. Like many other people have said, it is only dangerous when trojans or worms are created with the same name... This why you should pay attention to where you found the rundll32.exe S. Daniel
to repair rundll32.exe kk bhardwaj
Is there a fix for the rundll.exe It often hangs up and will not let me run some game and music cds, on my dell dimensions, 4600. Zone Alarm is my firewall. NAM
it cannot be a virus. Why? Because i have just bought my new vista today around an hour ago, i have checked processes and it has been there, i havent been on the internet, i have full anti-virus software and therefore it is impossible for me to get any viruses, in other words.. rundll32 is not a virus.. Kofi
It can be dangerous, but if you have control panel up when the process shows up on task manager, it is just control panel. If it is showing up when you don't have control panel up, end the process Lune
Every time i restart my comp, my antivirus stop function. But when i open the task manager and end the rundll32.exe process, antivirus function again. DevilsX
Fix per, Tech-Support (US Computer Mfr)-Your going to roll back the date on your C; Drive. Go to: Start, All Programs, Accessories, System Tools, Restore. Follow the instructions, choose a date before your problems began. It will restart your computer after restoring to specified date. I could immediately access my control panel and download updates. It did not effect any up to date programs or work that I had done. I backed up all files I needed just in case. A Roll back can be done whenever you run into these type of operating problems. Always be careful when deleting any files. Billy Ray Bob Jr.
It's from Microsoft and it is part of the core operating system, but you cannot bet it is running for safe and secure reasons at all! It would be better if Microsoft adopted a better way of doing things... but experience does not confirm we can think of it positively... Better switching to Linux as soon as our apps can run on it. Ubuntu is a really damn good start to avoid this rundll.exe issues for ever! A. Vassena
It disables the start menue and taskbar. But I was able to press "Ctrl+Alt+Delete" to get to the "Run" Function of Windows, so then I could run Norton to get rid of it. Collin Cerbus
It just stops Explorer.exe so u cant do anything and when u get rid of it windows runs normally but it comes back after a while ...
Rundll32 freezes all the time and is only sometimes useful FMasic
rundll32.exe is a process which executes DLL's and places their libraries into the memory, so they can be used more efficiently by applications. This program is important for the stable and secure running of your computer and should not be terminated. Scrin-
read loads of different write ups on it, and more often than not people seem to say its not dangerous. it just looks very similer to virus terminology mobilemania.8up.org
Downloaded with some other rubbish inadvertantly. Caused continual pop ups interfering with normal useage and slowed down the computer. Pop ups were all reporting spyware and directing me to rogue spyware sites. Couldn't be removed, system restore didn't work, a complete menace. Sorted easily and quickly by downloading free Malwarebytes' Rogue Remover. An excellent product and an excellent site dedicated to removing spyware from the web. Couldn't recommend highly enough.  See also: Link Now relieved.
according to msconfig, rundll32.exe command says to run the Bluetooth Authentication Agent. so if you don't use bluetooth, i'd say just go to services.msc and disable your bluetooth. ntkw
i found hidden rundll32.exe from dllcache folder, is it normal or should I delete it? Andreas
When it deleted i can't use properties when right click on desktop, can't show my computer properties. kyzin
You can use a program that automatically kills (or blacklists) a specified startup item (Not Tested and so might also block the real rundll32.exe). On very rare occasions startup items can be deleted from msconfig and regedit (if you don't have any experience it is better to use a Startup Manager) You might set the priority as low, although this would not really solve the problem at all. You can use a combination of methods I have written. There are various other techniques that can be used. This file should not be deleted but taken care of, if you suspect it.. Trapper
I have seen 'rundll32.exe' running on many of my clients' computers. A normal computer would not show this process although it still runs. As many others have said the aim of this program is to run Dynamic Link Library files (*.dll) into 32-bit executables (*.exe). This program is vital and should not be deleted. Clients have had problems accessing Control Panel etc. after deleting it. If you see 'rundll32.exe' (similar but not exact / multiple processes) that are eating your memory than you should do one of the following: 1) Use System Restore (although this might mess things up).. Trapper
its a very imp. file for all os. it is used to execute some programs and open the control panel akshaydeep
okay, every time i try to open my "control panel" a screen pops up that says "Windows cannot find 'C:\WINDOWS\system32\rundll32.exe'. Make sure you typed the name correctly, and then try again. To search for the file, click the Start Button, and then click Search. I am confused and dont know what to do. Billy
Get the ORGINAL rundll32,exe from your WinXP Cd. Start your PC in safemode and past the file from your CD over the top of the infected file. Always use a firewall (ZoneAlarm) and AntiVirus Program (NAV corp 9)  See also: Link Peter_C_
Its necessary and dangerous, exactly as anything else in Windows. If you have troubles, try to 1) Kill the process 2) replace the file 3) reinstall windows 4) Try linux Pierre
This application merely runs DLLs, problems with your computer that may seem to be caused buy this program are actually caused by a dll file, Start Run "Msconfig", and check all the programs that use rundll, google each one and find out if it's safe or not Tam
Rundll loaded since i intalled the nvidia driver for video card without it the control panel for display will not be there for u to fine tune your card. I have noticed the trojan/virus's use the same name for malicious exe files though scan your stuff regularly Rave
i searched for "runedll32" and it came up with runedll32.exe and also rundll32.exe(numbersletters).pf, can somone tell me what it is for? jason
Its part of the Nvidia video card. JGC
It's not necessarily dangerous, unless tampered with. It's part of WINDOWS so without it dll based programs wont work. If you delete it you'll see that your control panel tools wont work and many others. Just like "Nate" i too have the same problem, my rundll32.exe is 32.5 kb insted of 31 kb...i don know how to solve it my programs are all going haywire, not responding and microsoft office was completely corrupted Zaha
OK ... so it's a two step process in wich you can fix this . FIrst you go to this link http://support.microsoft.com/default.aspx?scid=kb;en-us;812340 do exactly as it says and the rundll32.exe will work for a while . Until you enter a game or shut down your computer . Then you need to get an antivirus with dayly update and run it . It will get the virus out of your computer and after it get's it out you need to do the first step again but this time the rundll32.exe will remaine in working shape .  See also: Link ALEXANDER
This file opens DLL apps... But dangerous to delete... That is NOT a spyware or a virus. Circassian Eagle
There is two rundll.exe one from new dot a virus i think. So go to run, msconfig go to startup and find newdot and disable it. AntiVirus
Is a windows file not dangerous unless infected  See also: Link Taqi Ahmed Taha
messes up iranview SAM
When opening Vegas 6.0 on vista, it [RunDLL32] stops working. I can still open control panel[after opening vegas/stopping RunDLL32, and my computer works fine. C. L.
i had a problem like this rundll32.exe too.. it will only appear when i tried to open or run any GAMES in my PC. LaDy_ArAnCaR
I downloaded a .bmp file and my computer froze. When I tried to close the .bmp file it said something that "rundll32" had froze. So I thought it was a virus i had downloaded with that name. I searched on the file and it came out clean with my AVG but I deleted it anyways. Now i'm thintkn it might harm my comp since it's MS shit. What should I do? :S or was it perhaps a virus? anyways I dont have it now the rundll32.exe file.. any help please. Andre
John was right about shutting down my nvidia toolbar icon. That made it go away on my running processes thx matt
I cannot open control panel or any other programmes without disturbance malcolm
Rundll32.exe like in the name runs dll files and is not a virus!
On my system, three run under my username in the task manager. Two are files that I know I can trust, but I don't know about the third one...The security task manager can't pick it up so I rate it as a little dangerous...sometimes. Anon
been having many virus detections in windows 32. many i delele, some i cant do a thing with. avast catches many of them, as well does spyware detector. but lately ive been having rundll32 errors when i log into windows and running from the icon. thats the only app i noticed probs with so far. i did a search for it and found rundll32exe originally in the windows 32 folder as it should be and didnt touch it after reading most of these comments. there were many pf files though in the preface folder which i deleted and a few otherrundll32exe applications in other folders, including windows matt
This is a vital program belonging to the platform. Gerrard
It's apart of Windows XP, and other Windows Versions. Nothing to be afraid of here, needed to run the PC in good shape. Joey
cause its my first experience with this file, i chose to be neutral though. I got this problem right now that if i right click My Computer or Desktop, Add and Remove programs icons and choose Properties i got a DOS window in form of a pop up as if rundll.exe is executed the it disappears but i don't get the my result of choosing properties; so basically i don't why it have to happen like this. I'm sort conviced it can be a virus for this case or i should update my antivirus software and scan for virus before doing window repair
If it pops up each time you open the internet then go to internet options, then advanced tab and uncheck enable 3rd party browser extenstions and then close all internet applications and open up the internet again and it's gone. Brian
Generic host processes for win32 services. FlYrAtEr
Well ALL I know is that its a pain along with other so called "harmless" Windows files that just sit around and take up resorces that could be used with the other programs that really need it ..if anyone here has any REAL info on how to kill it once it has done its job ..it would be good to place that here.. Jaberwoky
this is just because some improper programme is running on ur computer that the comp cant understand. atif
every time I open internet explorer i get a message from internet security asking if i should allow web host proccess (rundll32) to run or close it, how do i get rid of this message? I have vista. Joe B
Slows my computer (webpages, internet connection, etc) But so far it hasn't been doing anything else besides slowing things down... I always have a message that says Rundll32 is not working properly and then it gives me the option to close program. Trish
This file "C:\WINDOWS\System32\Rundll32.exe" is 100% legitmet, it has come with windows since windows 95. If your "rundll32.exe" is eating 100% cpu time, then it is either infected or running viral code. What does it do? Rundll32.exe uses the api call "LoadLibrary" in kernel32.dll to "load" the library it gets given in the command line, which then in turn calls the secondary entrypoint of that dll file. Which should be "dllmain". That is exactly what it does, all it does, all it has ever done. It is not a virus. Jeffrey
try searching your computer, click "search" in start-up then type "rundll32.exe" from there you will know wether it is a virus/spyware or harmless file..
windowshostprocess(rundll32) lakshminarayana
it is a windows system file managed the dynamic link library,its work is to convey the task with the library of the windows  See also: Link Tufail Prem
when i run error doctor whe i open my pc it is always an error on start up file and even if i remove it s always there everytime i open my computer. is this a virus how can i totally remove it markangelodano
iss ne windoof datei BS_Bomber
This is a necessary part of Windows. Yes, it is used to launch several malware files, but it bears repeating that it in itself *isn't dangerous*. All you people blaming this process on your problems should do a little searching and you'll find that it isn't this process that's causing the problems, unless you happened to be boneheaded enough to delete it. Your problem is something else you did to the machine. ALWAYS back up any file you delete, especially those in folders you shouldn't be in in the first place. LEAVE THIS PROCESS ALONE if you're not having any problems. Kenotia
it was stopping explorer.exe and control panel from opening; overall a huge pain in da ass. search for the file using windows search and dealte what is allowed what isn't allowed you can't delete anyways. I had to end the process many of time right click on the process and also end the tree try it it will work. LBS HAWAWII
I think many of you people need to go back to school and take a computer course. There are so many of you who throw nonsense into websites without getting schooled before you open your yaps. The file, as listed, is fine and won't harm your system at all.... AS LISTED Haargen_Dasz
wwhat happen when delet this file of windos
Potential Dangerous Information - RUNDLL32.exe is a microsoft program used to 'launch' DLL's as a process. SPYWARE and other related software use this in combination with services to infect your machine and to keep there software running. You need to dig into the HKEY/LOCALMACHINE registry and figure out what is launching it. It can be tied to WINLOGON, USERINIT and others during startup. RUNDLL32.EXE is not the source, it is just a generic MS launcher. You need to find the caller source. jimbo
its need to run winxp nakamura
Alright i have two of these in my task manager. When I pull up their process information using WMIC it says that the one of them is doing something with the nvidia tray thing but the other one says this: cmcnfgu.cpl,CMICtrlWnd The only difference between the files is that the one using nvidia ends in .EXE and the other one in .exe but in the task manager they are the same which one should i delete? BEN
Can be used to run C:\WINDOWS\system32\NvMcTray.dll,NvTaskbarInit if you have a NVIDIA based graphiccard and have the nView Desktop manager set to run at startup.  See also: Link Dan-Erik
its needed to run some softwares in a computer ibrahinm
Part of windows. Runs drivers as applications. It is not a virus/worm, as many of the people who have poor knowlege of Windows who posted here would have you believe.... Expert
Task manager shows rundll eat too much CPU as well as MsMpEng Richard
this file infected slowly and infected the library link another file like gdi32.dll and your desktop not define start in path location source the file shortcut indonesia
nothing seems to happen after i killed it using task manager
It is the most common file to be infected as a virus! the way to check is ALT CTRL DEL and look in procceses as clint said and if it running as system then you are ok.... but if it is running as you......... you've got a virus Oscar Sanchez
Its as dangerous as the internet explorer. The program itself causes no harm. It is part of Windows and necessarz for manz functions. But it can be misused. If you get a virus through IE, don't blame IE for it and if a Flash animation locks up your computer, it's not IEs fault, but it is the IE proccess which seems to cause the problem. Same for RunDLL. It is a launcher for program code (good or bad, necessary or unwanted) inside of DLLs. Such as the control panel applets. Or the NVidia control. Or a Virus, or a 'hanging' code. So try to find out what has been launched through RunDLL. Mikel
If you run procexp(Process Explorer by Sysinternals) and check the properties on it you'll see that it's mostly used with all things nVidia. The 2 instances on my local machine are for the GUI and nVeiwer. I've yet to have either cause a hang up or loss of any kind.  See also: Link John
Everytime i startup, rundll32.exe pops up and the hardware wizard appears. its really annoying, and somtimes when i plug in my flash drive, the wizard also pops up. i have no idea why this is happening. Danny
Just installed new anti virus, and now keep getting pop-up saying there is a problem with run dll32. What cas I do Mami
It is a harmless file. It's one of the necessary background tasks used in Windows of all versions. In short, it's SAFE. If your computer hangs from this process, then you need more RAM. Smart... Nick
That file may keep some programs from runnimg, but it's essential for Windows to run. The reason for the blocking is not a virus, but because the program (.exe) is corrupt, or the program has an error in the code. Winslow
I am wondering if anyone has heard anything about UNIBLUE Registry Booster to help repair the problems. I search rundll32 and this booster is who I get... does it work? Should I do it? It is worth the $$? Norton is not helping!!! I am clueless and my laptop is rather new! HELP!!! I cannot seem to do much for long periods of time before it just decides to shut down and I also get taken over by popups (firewall & popup stopper not working) Destiny
It lets me know when my JiffyPop is done. Amazing!! Also, normal process. Anything that infects your system and demands you to pony up cash to fix it is bull. Use the popular ad/mal-ware removal tools, update and run a good antivirus, stop downloading pr0n. lol Tweeds
NOT a dangerous file. Necesary for some normal computer functions. HOWEVER, viruses and other malware may disguise themselves as this. Please do not rate as dangerous. Please refer to the link if you must replace a currupt rundll.exe  See also: Link Joseph
need help rundll32.exe file has been removed and don't know how to get to back matt
It's not dangerous, retards. Chris
Its an intigrated part of all windows systems, it comes with them and is "TECHNICALLY" harmless, though it can become infected by many a trojan or worm if your not careful, so if your not having trouble with your computer, its fine, if you do start having problems, then it could full well be that a worm has infected it. In other words, it in and of its self is fine, however if it is infected then it can be a problem, however the problem is not rundll32 itself its the virus behind it.
I had this file on Windows xp media edition, and it made pop ups, shut down my firewall ect ect ect... so naturally i deleted it and i've had NO trouble with ANYTHING not even nvidia system things ect, and msn runs fine and so does my control panel, so I'm guessing if it's on xp ITS A VIRUS.... Sean
Appears to get hijacked by viruses alot which use it to run dll files containing then virus application Liam
I closed it down, but my process is still up to 100%. I don't know what is wrong. Winston
It's necessary for windows to run smoothly. If the file is corrupt you can try fixing it manually, re-install windows, or use a system maintenance tool.  See also: Link Mark
Not normally dangerous, a legit, essential, MS file that can unfortanately be exploited to run trojans and viruses as well. If you see it in the task manager, you've got problems. Durandal
it starts apps listed in its INI file, you have better to worry about that file entries to prevent unwanted addware to start with windows!
could someone help me i think this rundll32 has stopped my laptop screen from working i can view the desktop through the tv but this is not verry good. can anyone helpm please kev322
too get it back open task manager, click file new task, type: rundll32.exe paul
its harmless, if you dont allready know this.
runs my cpu 100% Ako76
this file is created in system is mor exe and our system is very slow Subhash Mishra
This is either a bad file, or a normal file. Run a scan to see. During my infection period i had two running, one bad and other normal. So DO NOT DELETE THIS ON IMMEDIATLY! N/A
I closed it in the task manager and my right mouse started to work again. Nick
When closing in Task Manager, rundll32 shuts down ALL protection on your cp and other applications Joe
harmless but slows down the computer very effectivel;y marabindra
just run ad-aware pro se 1.0.6 final in safe mode! Harioo
slows down comp and has trojans, ppl in this chat who say its ok are prob keyloggers Newbnomore
Nvidia n-view assistant sbaq
It's a needed System file! Don't think it's a virus , it COULD BE INFECTED! I have a problem with it and can't even start tools frpm the controll panel! AngelPL98
it's a necessary windows component Gunther
This program is why im going to have to throw away my computer. I cant run a virus program to scan the viruses in it because every time i open my virus program this rundll closes it cuzz
Multiple process runs in the taskmanger with this name & eat's the memory & make the system slow, sometimes running applications is very difficult. Also, not able to find even one tool which solves this problem Vincent
Well i noticed it running in the background, the only thing it seemed to be doing was creating pop-ups in my browser, so i didn't pay too much attention to it, but then i downloaded spyboy S&D and it caught the rundll.32 changing stuff around in my registry!  See also: Link Jack
i think it's not dangerous... my yahoo music launch doesn't show when i disabled it. so it's part of the system... phastel
dll stands for dynamic linkable library. When programs are linked, relative adresses of subroutines are assigned absolute adresses relative to the starting adress of the final program. Microsoft developed technology (Microsoft names but NOT new technology (I did this myself back in '80's) the dll allows 'subroutines' to be run without being linked into the final program. The advantage of this is how 'plug-ins' etc. work. The rundll32.exe is the part of windows that executally 'executes the dll. If there was more space here I'd add more. rawpro
The rundll32.exe process is responsible for running DLLs and placing its libraries in the memory. The rundll32.exe process is known as a command line utility program, and it performs its embedded functions along with the rundll.exe file. Rundll32.exe works by invoking a function that is exported from a specific 16-bit or 32-bit DLL module. However the only DLLs that you can call with the rundll.exe and rundll32.exe files are the ones that are only specified to be accessed by these processes. lapertz
2 rundll32 files appear in my task manager process tab and it freezes my system as it uses most of the ram hubert
rundll32 is an important part of your computer, so be careful not to delete the good rundll32. however, if there is more than one rundll32 on your computer, then delete all of them but one. I had an msn hacker and he completely ruined my computer, and tonight, i just found out that he's back again. I cant seem to get away from him, if u have any advice it would be appreciated. My advice is to just delete rundll32.exe, but keep the GOOD rundll32 Emma
I have 2 loadpowerprofile's in my startup. I found if I checked both the computer had numerous rundll errors. If I left the 2nd one listed unchecked my computer didn't have the rundll errors. ;) hope that helps someone. Diana G
It'z for runnin most of d applicationz Apurva
The rundll32.exe on my pc uses all my ram. It's internet control panel thats doing it. It starts when I exit internet explorer. Then I can't shut my pc down. What do I do to stop it happening. Do I uninstall internet explorer. HELP!!! Clare
Its used to run dll libraries but in some cases viruses/worms/trojans can hide behind this file....An easy way to tell if its infected is to open it in notepad, if it has anything wierd or obscure like someone tried to make a graphic with the lettering, then its infected, i know, ive got it UGH! Erik
rundll32.exe is not a needed file rename it to something else and if it is spelled in caps: RUNDLL32.EXE its a virus... LMAO
it is a dll file that infects system32 of windows. sometimes it hids under the name bijlukk.dll. it prevents from opening the browser(mozilla or ie) and worst, it freezes the screen and shuts down the browser. rpabastillas
rundll = NvCplDaemon is the part of the nVidia unified video driver which provides functions for user configuration of the driver. During a normal startup, the nVidia Display Driver Service checks for the registry key HKLMSOFTWAREMicrosoftWindowsCurrentVersionRun for the NvCplDaemon string, and replaces it if not found. On some systems the nVidia Display Driver Service may need to be running for customized driver settings to be applied without further user action, thus the NvCplDaemon entry will also be present in such a case. goto daemon driver services to manually config it. experienced pc user
This file acts like a game emulator. This runs a DLL extension as an executable. Removing is not recommended. COHA Systems, Inc.
This is not a Virus or Malware, but they do hide behind this process. They use names such as 'RUNDIL.exe', and when it's written in lowercase (and the i in uppercase) it'll look like it's the same as rundll.exe.
it is part of essential windows file system muhibbee
it slowly corrupts your computer until your computer is dead, replace it with a real rundll32.exe file that is about 68 kbs now! birdoys
it's a program that helps dll files run ,the reason when you end/delete this your conmputer starts working fine is because youve indirectly ended the virus whatever you do do not delete this file go and get some antivirus kryptonite
its part of windows do not touch it if your antivirus finds something in it your good for a format/reinstall PROOF
Rundll32.exe is an application that is used to launch functionality stored in shared .dll files, because DLL (Dynamic Link Library) files can't be launched directly.  See also: Link Vishal
Its a component of windows , which is required for the windows to boot however if any specific dll got corrupted it would prompt on the comp which can be executed by going into task manager - applications - right click on the dll - end process tree MAX
It is not a virus it is a windows component Rinix Corp.
It's used for running DLLs. It's an essential part of Windows. However, it's registered as a backdoor vulnerability, so viruses might use it to mess up your PC.  See also: Link Lizzy V
If you have spotted rundll32.exe (or any variant of this) on windows task manager, you must scan it with a spyware and antivirus and remove it quickly. The real rundll.exe will not show up on taskmanager. Xentay
I don't know why people would actually suggest removing or stopping rundll32.exe! It's one of the vital executions needed for Windows, without it, certain programs won't open and your system will be screwed. It's not dangerous at all. Ashley
In the article above it is stated rundll32 should be found only in C:\Windows\System32. This is not entirely true. The file is also present in C:\WINDOWS\ServicePackFiles\i386 with systems running Xp Pro sp3. This may well be true for other OS also. joelj1964
If I watch it for a while in the task manager it doesn't do anything strange. It takes 0% CPU all the time. VirusBreaker
As said, this is a legit windows process. I do not know however whether it can be a virus or not. Had to instances running with a download speed of 100 kb. When the least memory consuming process was terminated, my download speed soared to 6-8 mb(!) ps. kbauer
rundll32 is an important part of windows and not dangerous. Some viruses might disguise themselves as rundll32. See to fix rundll32 error manually  See also: Link Mark
It is a windows file :/ Bob
just that it uses extra memory of cpu kaalnemi
If it is rundll.exe in windows' system folder, do not delete. I have zone alarm pro that alerts me rundll.exe is trying to open windows/explorer or explorer's processes. Task manager shows rundll32.exe as running. I clicked "deny" in zone alarm and rundll32.exe disappears from Task Manager. My computer running fine. ALSO, after zone alarm deny rundll.exe from accesing windows/explorer, I can open Users Acounts in Control panel. Been unable to open Users Account for months, even after trying various other solutions. kenji
i agree with proof... dont touch this file.
it is used as a windows file for DLL files... and also a virus(sry bout previous comment). if u go into processes from the task manager youll see 2 rundll32(if it is a virus), one will have a discription and one will have a blank discription... the blank one is probably the virus... the virus uses to programs, one is called irubab*32(the discription will have a bunch of random #'s and letters)... the second one the name escapes me but it also has a *32. dan
when i start my computer, it says Windows Defender need to install new update sakib
It keeps opening and closing about twice every second and my cursor keeps going from normal cursor to busy cursor. It is weird. Nathanprocks
showing 2 of it on taskmanager processes tab and it says it was launched by me (administrator) but i do not really i was automaticaly running at startup when i reformat my PC it gone Dark
RunDLL is used to execute thousands of stored functions in the windows dll files. The dll files are archives of code and api calls Siidheesh
my pc generates this error madhuresh
This program could very well be a virus waiting to destroy your computer, or just a normal .exe file that let's you're computer run...Don't download anything that's too big to remove it, i've tryed everything and nothing worked undefined
Yeah its needed in the Whole computer thing but currently it was hijacked br some msr2cen2.dll which is a new backdoor malware I want to remove!!!!!!!!! Anyone out there who could remove this new malware, tried searching google, but no results... hate_unknown_malware_msr2cen2.dll
not a pro but... I have Windows Xp and I went to msconfig and just X off both that were there, did that over a year ago and at least it does not load and I have not had any problem with it..I know it came with my computer and both the RUNDLL32.exe and rundll.exe were there when new..I did not lead them to laod at startup and this made my computer to run much faster..Hope this helps anyone out there..
The rundll32.exe plays a vital role in Windows system. It is responsible for managing your files remains its core purpose. It is also a Windows executable file which can be disabled by many spyware, virus, worm, or trojan.  See also: Link Alex Paul
Rundll32.exe is a legit Windows program. The trouble is, is that viruses like to masquerade as the program and cause all sorts of operating problems: everything from causing errors on start-up and close-down to overheating the system. Put the system into Safe Mode on start-up (F8) and see about tracking down and getting rid of the ersatz rundlls via System Configuration. Safe mode with networking and proper installation of Malwarebytes and Anti-Malware seems to work for some people. If you're not computer-literate and don't feel competent messing with the problem, find someone who is! Allana
well. I'm on my bro's laptop.. It won't let me open the internet.. or anything:'/ Effy
Rundll32 is a shared library used by many legitimate programs and can also be abused by malicious programs. as it is an integral part of windows, it cannot be removed; abuse by rundll32 is caused by another program using it, or instability from elsewhere. GP Burdell
it took my pc performance 50% and explorer.exe was taking
vmware workstation 7 use this exe and upon closing vmware workstation this exe also disappears from task manager. intizar57
It's part of Windows!  See also: Link xFKNxWillisx
Very Very importand to windows but can be manipulated to do virus damaging things Arta piza
if your rundll is being deleted you cant open programs with ddl files jan michael
My windows vista laptop notified me that Rundll32 wasnt working properly. My control panel and everything else is fine, but my computer cannot connect to the internet and is running insanley slow. Tony
Have Had This Virus But AVG Cleaned It, VERY Dangerous As It Is Packed With Many Things. Remote Control, Keylogging, Ads, Sends Off Your Files To Hacker And Blocks Off Certain Programs. Harry
Let me separate the facts from the fiction. rundll32.exe is a program that is used to load other dlls when a program requests them. Control panel, for instance, utilises this program to run its applets. Unless you want complete havoc on your computer, don't delete this file.
The virus using the name Rundll32 is a some kind of Trojan or Spyware malicious software who's merging with the original Rundll32 system file,which came in a form of Windows Defender but with the name "System Defender",it's similair to original Windows Defender but it's just a virus or a spyware,it cames as a Trial version and it frequently notice you that you have lot's of viruses and spywares but it's just a fake information,it's because the publisher of this virus wants from you to purchase it on the web and take the money from you,i had this problem,but when i closed him in a task manager Aleksandar Sanader
When you uninstall the AVG Antivirus program rundll32.exe continues to want to load the program. A rundll32 error says The instruction at "0x010017f1" referenced memory at "0x1000003c". The memory could not be "read". All I have tried to this point has not been able to correct this problem.
Should have two rundl32 processes running both are ok and part off windows normality operations miky
rundll is windows programme running application file mahesh
It is a legit windows process. It's what allowes you to launch most .exe files, including native ones such as add/remove prgrams. You should never delete it if it is launching from the system32 file. However some virus launch from their own file called rundll32.exe, this you can delete as it usually originates from the desktop, documents, or temp files folder. A good malware or panda safe disk scan should help. David Robertson
Required for Windows to run and for running DLLs. Many of these comments say that it is dangerous because they deleted it and their computer stopped working. Well of course it did. GC
When i try to open certain games, it wont open and it starts to take up most of my pc usage. it not that i think its dangerouse, its just that is annoying.
Rundll32.exe is a system file....
Do not delete it permanently. Deleting it permanently is kind of a bad idea.
rundll is a good programm for running to help other programm upendra shiv
rundll32 is a system file and should not be deleted in its folder, just prevent your installed program from accessing or running it, just installed firewall like zone alarm, and prevent programs from accessing it, (youll see it on pop ups) and if rundll32 is already slowing down your computer, go to task manager - to processes- click rudll32 and delete it,( it should not be on the background) and if it keeps on comming back on your background and slowing down your pc, use system mechanic of, uninstaller program, go to control start up programs and uncheck rundll32. eugne
Rundll32 is a Win system file IF it's located in the Windows system32 directory. Otherwise it's some variety of malware. For Vista and win 7 you can right-click on the taskbar and start task manager--click "view/select columns" then choose command line from the list-- then you'll see the full path of each file listed in the task manager. If rundll32 is anywhere besides the system32 directory, it's likely malware--trojan, virus etc. Download Security Task Manager for explicit details. CC
you can see about proccess this file check name and start tab in security task manager file... in the start tab i can see this file start by g2897b1w.exe file.... kian
can hide exe files like trojans and botnetīs, open it up with notpad or notepad++ to see the script, if it links to the win32.bin file itīs a virus if it dosenīt then its fine. just check it. if it is then boot u in safe mod, delete it. and rebot. if that dosent help clean it with CCcleaner M0rph
I acidentaly deleted it because i thought it was rund1132 but it was ll32...anyways it auctualy made my comp run faster with more tasks Kyle
IF it is running on startup.................................................. Delete the PREFETCH data C:\WINXP\Prefetch ...................... just delete the contents IN that folder and restart.......If there are no longer any programs that require it at startup... it wont run..... It should only run when a DLL is needed and should not be always on for 99.99% of software. There are a few exceptions but only a few.... ..... Do not delete rundll32.exe in the system folder...... jiol
if you have 1 rundll32 its normal if you have more than one look for the path of all you rundll32's. if they NOT in your SYSTEM32 its a virus! Ecyclopedia
I logged into another account on computer,downloaded norton and ran it.Then restarted comp and logged into account that had the virus and ran a cleaner program to delete history etc. kim
This starts and eats all physical memory and hangs your system. If this happens, your system becomes irresponsive and you need to power of your system. THis is happening daily once in my laptop. Murali
Rundll32.exe is a core system file that is required for Windows to boot and function properly. Rundll32.exe loads other important startup files like hal.dll into memory during the boot process. If it isn't in the windows/system32 folder then it is being used by malware in those other locations. Look for the spelling of these malware infected copies. Sometimes you'll see the name rundII32.exe with the malware infected copies. As a note, if you disable rundll32.exe to run at startup, Windows will no longer boot and you'll get a message similar to this..."Windows can not boot because the following file or DLL is missing...rundll32.exe. Please reinstall a copy of the missing file." TechWizard86
Windows Host Proccess For Running DLLS to keep our computers functional.Additional info: Creator: Microsoft Corporation. Location: C:\Windows\SysWOW64 Used for: Keeping our computers functional and run programs which require special DLLS Other Morphs: If not located in SysWOW64 then it is a virus. Additional Malware,spyware,trojan etc. Info: If you have more than a single rundll32.exe running then you have a computer infected. Else it is safe. Gustaz
This file not dangeorus iLove
i am not able to access my folder on memory card...it is accidentaly converted to rundll32 shortcut..... Kapil
my photo gallery does not work without RUNDLL 32!!!! Mani
When I try to turn off my computer rundll32.exe pops up, and the only way to turn off my computer is to "end process". Mark
When is shut down my computer its giving error ending program.. please wait above that message box heading as end program - rundll32.exe Ramesh Narne
for me in task manager it is called rundll32.exe *32 i'm not sure if its safe...the *32 throws me off Andrew
this does a lot of functions in dll files like the run dialog. but a lot viruses use this too. Oskar
The file itself is not dangerous and it is an essential file in windows. But malwares might use it the run dangerous code!!! Anyway, DON'T DELETE IT. Anonymous
This is a valid Windows program used to run DLLs (hence the name). YES there are also viruses out there that use the same name, and YES viruses can exploit and screw with your rundll32.exe file, just as they can screw with any of your files, and YES sometimes you will have system or registry errors that cause it to not run properly... but the file itself is safe, valid, and necessary for certain functions. If you're having rundll32.exe problems, rundll is not the cause, unless you have a second illegitimate rundll32 file hiding on your system somewhere. D
Don't touch or edit the file lets pretend it it is the you kill it you kill kernel32.dll = computer dies :( see your self Vincent Bartolo
run dll32.exe can be both harmful and neutral, what it is, is a execution program run by windows so that it can startup all the windows nonsense like explorer.exe, but some clever person from poland in 1980s found a way they could use this to run a selected program that they have planted on your computer, ie a virus downloaded from the internet because normally they would have to make there own executional file to start the virus process, but using the rundll32.exe was much better because it could use it as a way to mask itself and tricked antivirus software into thinking that it was windows opening the dll until Dr. Solomon created his Anti-Virus Tool-kit to remove them. if it appears in upper case letters then it will probably be some home made virus and i would consider removing it, ps, ANDREW - the *32 is normal it just means that you have a 32 bit computer, (how many bits of data your computer uses) but you don't need to know the technical stuff. Richard
Hit start type MRT (Malware Removal Tool). This is included in every Mircosoft Computer choose full scan and follow the steps. It is a good idea to do this in safe mode Simon
Multiple instances of RUNDLL32 may be running on your pc at one time. Some of these may or may not be the legitimate versions. SID JUSTICE
Just leave it it will dont do any thing ..... Dont rename it or dont do any more ..... diwan chowthry
This is a valid Windows program used to run DLLs (hence the name). YES there are also viruses out there that use the same name, and YES viruses can exploit and screw with your rundll32.exe file, just as they can screw with any of your files, and YES sometimes you will have system or registry errors that cause it to not run properly... but the file itself is safe, valid, and necessary for certain functions. If you're having rundll32.exe problems, rundll is not the cause, unless you have a second illegitimate rundll32 file hiding on your system somewhere. mans
The file itself is not a virus, but there is a virus under the same name. Brii
The windows required rundll32.exe... But the hackers attack this file ..to crash the pc And the most of the virus and malware s written by hackers for attack this file... If you want to prevent this .. Make your pc is well secured antivirus.. Rask in

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