What is firefox.exe? Is firefox.exe spyware or a virus?
How to fix firefox.exe related problems?
1. Run Security Task Manager to check your firefox process
2. Run a Windows Repair Tool to fix firefox.exe related PC problems
3. Run an Antivirus to find persistent malware
Process name: Mozilla Firefox Browser
Product: Mozilla Firefox Browser
Support: Help link Update link Uninstall tool
Company: Mozilla Corporation
File: firefox.exe
The primary named executable file of the free nonprofit Mozilla Firefox browser is part of the free download available from the Mozilla Corporation, which is a taxable subsidiary of the Mozilla Foundation..The Mozilla Project is considered open-source but the Mozilla Corporation employs a large number of Mozilla developers and its parent (and full owner) Foundation owns the Mozilla trademarks and all intellectual property, and is responsible for regulating who can check code into the Mozilla source code repository.
If you want a detailed security rating about your firefox.exe (and all other running background processes) read the following user opinions, and download the free trial version of Security Task Manager.
Note: Any malware can be named anything - so you should check where the files of the running processes are located on your disk. If a "non-Microsoft" .exe file is located in the C:\Windows or C:\Windows\System32 folder, then there is a high risk for a virus, spyware, trojan or worm infection! Check it out!
Click to Run a Free Scan for firefox.exe related Errors
Users Opinions
Average user rating of firefox.exe: based on 169 votes. Read also the 132 reviews.
12473 users ask for this file. 108 users rated it as not dangerous. 16 users rated it as not so dangerous. 15 users rated it as neutral. 6 users rated it as little bit dangerous. 24 users rated it as dangerous. 12 users didn't rate it ("don't know").
| All comments about firefox.exe: | |
|---|---|
| This is a Browser! It isnt Dangerous. Sorry 4 my Bad Englisch :P Eren | |
| Great Browser. Safe alternative to IE. Recommend A+ | |
| Best browser available :) See also: Link KDE | |
| Mozilla Firefox web browser Tom | |
| This is THE browser. JimH | |
| A good SAFE web browser, I prefer it to Internet Explorer Rupert | |
| If I have -9 i'll give this rate. Firefox is THE webbrowser. It's safe and fast. Shio | |
| Good browser. Patch it up though to avoid security holes. Kallbrandt | |
| The best browser out there. And by far the safest. Grungi | |
| This will cause compatibility problems if you are using IE at the same time. | |
| The best Browser supo | |
| FireFox is the best browser available See also: Link Jeroen Vandezande | |
| Alternative browser to Internet Explorer See also: Link Ben! | |
| A very safe browser stops popups dead in their tracks Clarence | |
| The BEST Browser, Safe and fast TwoBears | |
| Very Good Browser Sztosz | |
| Great Browser. Safe alternative to IE. See also: Link Tim | |
| as people said its a web browser, aweosme one at that See also: Link Pac | |
| this is a greae browser with security!!! | |
| Excellent browser, open source See also: Link bitfreeze | |
| mozilla/secure web browser/very safe See also: Link glendor | |
| des is der beste browser, nie im leben ein virus TrAmPi | |
| A much more secure browser than IE See also: Link Boyce | |
| Firefox much better than IE Nate | |
| i just got a virus which names itself firefox.exe it is not at all asscociated with the firefox web browser. stu | |
| It's firefox, but it opens port 1244 for no reason, it's a client, not a server Marcel | |
| A good browser. Lard Lad | |
| Guter Browser, sehr sicher Theo | |
| firefox browser See also: Link 1 | |
| Excellent browser! See also: Link denial_land | |
| a good browser, BUT it should only run 1 process. I found a second process with the same name that is BAD. there should only be one with that name, if there's 2, u have a virus or something. marc | |
| Firefox is a very good browser. Tab function to open in the same window and Ctrl + or - to increase / decrease text size is very useful. Alcides | |
| Dump Microsoft and get Firefox and Gmail Today!! So popular though it may be under attack. Keep security up to date! See also: Link herbsmokinfreak | |
| This is a web browser. It's more secure than most browsers (thats until it gets really popular!) See also: Link Doody | |
| Mozilla Firefox - decent on security, but requires updates just like any other program. C.D. Random | |
| It's Faster and " intelligent " Justin | |
| A brower better than IE mausau2000 | |
| Best browser ever OG Shinji | |
| Check to see how many processes you have running using this name - seems that something has started masquerading as firefox.exe even when the genuine firefox isn't running. Firefox is still great - but someone's trying to spoil it for us! steveanderic | |
| Itīs a Browser from Mozilla, this browser donīt Danger. Rocky | |
| Mozilla / Firefox browser, excellent, way safer than IE, doesn't work on many Microsoft corporate sites. See also: Link DJ | |
| The best browser RuFy | |
| Mozzilas attempt at a safe web browser, possible reasons for having more then one in your processes is that the first one froze and you ran it again and so on. See also: Link Robert Ketron | |
| I love the browser Firefox. But it seems like I've got a virus now called firefox.exe. I just can't find any startup for it in hijackthis. Anyone know where I can see the file path for it? Simon | |
| like interbet explorer matcor | |
| This browser rocks add the xtension stumble and wow See also: Link Ian | |
| Consumes alot of CPU as you add extensions (1.0.7) Paul | |
| best browser devotee | |
| Best browser ever, very secure, and works good with McAffe Virus Protection. Xavier | |
| FIREFOX - Spread the word! | |
| Best Browser so far, make the change of your life ! Get Firefox !!! See also: Link BEN AYALA | |
| You can make it even faster. Find information over here See also: Link Link asdf | |
| fantastic file browser, konqueror is faster :) but firefox is still excellent. dump microsoft all together and get linux and USE FIREFOX NOW! See also: Link chris | |
| Mozilla Firefox, a webbrowser that is userfriendly. As with all browsers they sometimes have security flaws, but the Mozilla team quickly provides patches for those. See also: Link BJaw | |
| Excellent browser. It opens with a little delay but during its use you have absolutely no problem... no matter how many windows (or tabs) you open it doesn't crash.. while IE opens faster than firefox but if you're willing to open many windows then you're pushing your luck... Greg | |
| It is a browser, but whenever I restarts my computer, or my explorer.exe process, a virus by the name of firefox.exe appears and really slows down my computer, altho I can turminate it thru Task Manager. Lone Wolf | |
| A browser- more secure than IE, but has exploits that didn't get fixed for almost two years now. Prone to eat your ram for breakfast and is the slowest out of the "big three"- Opera, FF, and IE7. Moo! | |
| Very useful Viet Anh | |
| Best Browser on the Planet See also: Link | |
| Firefox. Ew. Unsafe. Memory hog. Slow. Use Opera. 'Nuff said. See also: Link Kisara | |
| safest browser you may ever see... | |
| the best browser available! But...I got a virus named the same thing recently... now i can't open the real one! See also: Link Skyler Nathanson | |
| Firefox is the only browser I use. I think the multiple process thing might be a small glitch that hopefully will be fixed in the future. | |
| Mozila Firefox. This is one of the best browser! See also: Link Filipp | |
| firefox.exe running in my processes even tho firefox isnt being used... think this is a trojan? I cant remove it, and it is something to do with a file called ali.exe tron | |
| Its a W32 Worm. Or i can be. If you havent installed the webbrowser, its a virus. I got the crap from a program called "Webspycam" . So i got 2 firefox processes. The normal one i can close, but the other comes back the whole time.. Chrilloo | |
| Firefox empowers you to browse faster, more safely and more efficiently than with any other browser See also: Link Firefox fan | |
| You have to be joking if you think it is dangerous. Its a browser Dylnuge | |
| Yay for firefox. the best browser! Jeltz | |
| I have a process with that name, I end it manually and it starts again by itself. It's different from the web browser. I don't know where it is to delete it. Oscar | |
| It is a copy of firefox.exe in memory, which start itself, without user(my) permission by dllhost.exe(??), and forcing my CPU to 100%! If you try to close it, it starts again and again. My firefox.exe(orginial Mozilla Browser) isnt in run or on any other startup, and i didnt start it by myself, spyware terminator dont recognize it as threat, neather NOD32 2.7, but based on my experience as an programmer, it's some kind of fake_name.exe service! Any explanation?? PEGASUS2007 | |
| Best Browser Ever. ang | |
| If you have two Firefox.exe running you probably have a trojan called Poisonivy. It's bad news. It can be used to tunnel into your system, keylog, copy files & change settings. Do yourself a favor, dump Norton & grab NOD32. See also: Link Link jj | |
| Mozilla Firefox, safe but slower than IE or opera Anon | |
| on startup there is a file named firefox.exe, about 5700k, when firefox is started there are 2 firefox.exe files, the second about 60000k, if the smaller is terminated, firefox works fine, otherwise the computer hangs dave anderson | |
| Internetbrowser from Mozilla See also: Link X-Ray.Ger | |
| Firefox empowers you to browse faster, more safely and more efficiently than with any other browser. See also: Link fans | |
| does anyone know the name of the second firefox.exe virus or how to remove it? jj | |
| i have it too, it startsup alone and if left running for a while, the pc almost stops responding at all, have not figured how to remove it yet though, and people should help instead of spamming about how good firefox is some1 | |
| If update Mozilla Firefox, GREAT! I Also use Opera Latest version! I language Hungarian, I Understand(Not fully) In english. :-) Download Thunderbird now. See also: Link meow | |
| Firefox.exe is the executable file for Firefox, which is the best browser ever NJ | |
| c:\windows\system32\firefoc.exe wants ip 69.60.122.13;6667 I never installed firefox Todd | |
| its the W32/Tibick-F worm if it runs at about 3.000k Paul powers | |
| One major flaw - Can't run in the background, always takes up huge amounts of memory. Jeff | |
| Fewer flaws than IE Robert | |
| Safe obviously, unless you are running 2 processes, one will be small. If thats the case you are infected with a keystroke capturing trojan horse. Steve Savage | |
| Great Browser without the issues of IE | |
| firefox is a great browser. safe, secure and if have siteadvisor (www.siteadvisor.ca). i found a funny add on which renames your tabs so only you know what is on those pages anonomous | |
| Best browser available. BOW DOWN TO THE FOX! (Who happens to be harmless). See also: Link Dave | |
| wtf it keeps spiking to 50% cpu usage when ever I use it causeing it to freeze for like 10 seconds, in intervals of about 40 seconds or so... whats goin on here, my IE is doing the same, except it freezes while loading web pages instead. | |
| it is just a browser,good browser :) Humuhumu | |
| This is a program now that is less safe that IE. IE has gotten better security now, and it has now more SSL protection than firefox. -.- | |
| sometimes it takes up 99% CPU usage for seemingly no reason. there is only one process and it can be terminated without coming back on its own. perhaps it is a conflict with internet explorer but i need IE in order to do the windows updates. the windows updates refuse to work with firefox so it seems like i have to keep both. any feedback is appreciated at [email protected] Midnyte | |
| firefox browser is not dangerous but a worm named zasran can create a process "firefox.exe" which restarts ur computer periodically Adi | |
| So how come I have 14 firefox.exe processes still running although I just ended the application with winxp task manager? Even with normal close window those 14 firefox.exe still keep running oO Oh ye? | |
| I would worry about it if I have never installed the browser and have firefox.exe running. angela | |
| It is a Browser! Not Dangerous!!! Justin | |
| File firefox.exe is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of C:\ or in a subfolder of the "My Files" folder (usually C:\Program Files\Mozilla Firefox\). Known file sizes on Windows XP are 6637156 bytes (10% of all occurrence), 6631012 bytes, 7633008 bytes, 7190637 bytes, 7604331 bytes, 7166053 bytes, 7183469 bytes, 7620696 bytes, 6636644 bytes, 7177325 bytes, 7162979 bytes, 7191149 bytes, 6621794 bytes, 6637161 bytes, 7200365 bytes, 7172197 bytes, 7206509 bytes, 6627428 bytes, 7171685 bytes, 6631017 bytes, 6636649 bytes, 6626916 bytes, 6610944 bytes, 6578276 | |
| Hidden as a Virus, Theirs a Process called "firefox.exe" that is a Backdoor. if u open up the original browser firefox.exe you can see it takes up way more memory than the original! See also: Link Peter | |
| Firefox is the best browser! Not dangerous! Nyar | |
| Best web browser that is getting better. Desert Crystal | |
| if you have 1 firefox.exe whitout having started firefox u have a virus. wen u remove firefox.exe from its directory u get 100% Cpu on explorer so have no clue how too get rid of it. | |
| The application failed to initialie properly | |
| It is a very nice browser thats faster and appearantly more secure than IE. It has started to grow in usership. | |
| Mozilla Firefox, highly secure browser. Joshua | |
| The browser that is superior to IE in every way Mart | |
| broussardaleshiab1 Darryl Broussard | |
| Free, open-source Internet browser. There are a wide variety of third-party plug-ins available, not all of them reliable or secure. See also: Link Link Jingfired | |
| C:\DOCUME~1\USER~1.EFR\LOCALS~1\Temp\9a5a_appcompat.txt jaffaz | |
| remover este firefox da minha net | |
| Pretty good browser, except that it eats up a lot of memory. So I highly siggest getting a ton of memory and ram before you use Firefox. xD and I've heard about a virus that masquerades as firefox.exe. so if your computer has 2 firefox processes going (in processes in Task Manager) then one of them is the virus. And if you don't have firefox and the process is showing up, then you have a virus. bluebird1494 | |
| Well it Seems Easier to Handle, But It Also Seems Like there are some Imposters out there trying to spoil it for us. According to what I read. I Personally like it. Anonymous | |
| Mozilla Firefox is a web browser. | |
| @bluebird1494 - If the firefox application doesn't go up to 30,000K, it won't start. You can sometimes see two applications when you bring up a new window, but they will join into one. Andrew | |
| it is very good softwere. niranga | |
| Best browser available | |
| scanned with super anti spyware & malwarebytes showed no virus but when using firefox 5 malwarebytes blocks firefox.exe malware cannot find the file to get rid of vim | |
| Best webbrowser :) Peter | |
| Best Browser on the Interwebz. However acts like a virus when bad flash and javascript is nearby.... COMON MOZILLA, re-create your javascript engine, needs to be as good or better than Google Chrome's .JS Engine. Won't Convert to Chrome. | |
| it will create four files that as shortcut in removeable drive ., and one recyclerfolder ... and also some name file will sit in the startup that cant be details if u delete it & remove for the regedit ..then u ct able to logon to the windows .. the logon window never goes ..i had suffered lot by this virus ex .. u can c some file as oijmufxg.exe and an foleder is created in program file named as gfrakcos joo | |
| its a fast browser g | |
| firefox is constantly consuming 100% of my cpu and overheating my powerbook because of flash conten See also: Link DSustin | |
| firefox.exe is safe if you have Mozilla Firefox 3.0 or above and are running the browser. However, if it runs without permission, starts without user command, starts at startup without proper configuration, or other things, you probably have a trojan or a worm. For the browser on Win7/Vista I suggest you get an /ftp/ version so that it downloads directly from the server. Also if you have a plugin running plugin-container.exe will be in task manager. Geek | |
| Mozilla Firefox browser ssErgiy | |
| First off, THOSE VIRUSES ARE NOT FIREFOX, they are a trojan masking as Firefox. Firefox is a web browser by Mozilla, it is one of several F/OSS web browsers. Your virus warning is going to make people believe all versions of Firefox are bad, if you have a trojan masking as a program use only one red dot. I prefer chrome, but i also usually install Mozilla Firefox. TIP: Safari and Iexplorer are horribly slow and bulky browsers, always get a third party like chromium or firefox. See also: Link JD | |
| Firefox is a good browser and is certainly less prone to attach by virus. However, new release are becoming more and more compatible with Microsoft and its threaded internet explorer. Any browser is prone to attach however there are few out there less used such as opera and safari these would be great alternatives to the the big 2 Trevor Goble | |
| it keeps resoping and i have close it brooke | |
| When I try to run it, it downloads Trojan Horses, several viruses which have to be removed. Jessie | |
| It`s just Mozilla Firefox(http://www.mozilla.org/firefox)It`s not causing any danger to you`r PC Siddeshwar | |
| There is multi process firefox now,so don't be suprised if you see multiple processes running.However,if firefox.exe is running and you haven't started firefox,you may want to do a virus check. See also: Link Aritra | |
| Firefox Fantastic browser... Alex B. | |
| Some security features looks like they turned on,but checked with security task manager they are not.. noticed wierd behavior like sometimes screen flashes or moving a little..als high gpu acces. Also there's a recent added configfile(yesterday) about root certificates,but it's suddenly empty after disabling it.. kl_config_62fbb8f7_c917_4cf7_957a_aad2b8fa768c.cfg also i noticed i'm part of 2 networks..fpn.firefox and one similair.. some wierd java things running which i never seen before..could trace some adres..https://tech.yandex.ru/jslibs/ absolutly never installed things like this,i'm working in the financial sector and keep my computer very clean...this is the second time Mozilla!! See also: Link first name | |
Show all 132 comments
More process information
Is firefox.exe spyware or a virus, trojans, adware or worm? Is there a known firefox.exe error?
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