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

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

Process name: Content Index service

Product: Microsoft Windows

Company: Microsoft (microsoft.com)

File: Cisvc.exe


A background process in Windows, the Content Index Service catalogs and tracks files on the hard drive and indexes them for faster search results. Initially introduced in 1996, the Content Index service was crucial for finding files in versions of Windows until Windows 7, when Microsoft introduced Windows Search. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.http://www.neuber.com/taskmanager/process/cisvc.exe.html 
If you want a detailed security rating about your Cisvc.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!


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Users Opinions

Average user rating of Cisvc.exe: based on 65 votes. Read also the 65 reviews.

  • 578 users ask for this file. 19 users rated it as not dangerous. 6 users rated it as not so dangerous. 19 users rated it as neutral. 12 users rated it as little bit dangerous. 9 users rated it as dangerous. 8 users didn't rate it ("don't know").

All comments about Cisvc.exe:
Often authentic microsoft tool, but same name can be used by a keylogger.
Causes core to drop on windows XP Pro Jerry Haney
microsoft, indexing service, can be enabled and disabled in "F3" search dialog Colas
monitoring file for indexing service damo
i takes lots of ram
AVG detected this as Trojan Horse (was in temp directory) Dopper Agent 8.B by AVG classification Avner
came up as a trojan on avg antivirus, I removed it , puter running ok Roco
Could be mailsious program if not located in windows\system32\ Garsmano
background drive content indexing for fast search James Colin Vaughan
Colas is right! - do as he sais shani
indexing service Part of MS OS oldfar
ram hog jk
it can be dangerous like garsmano said if it is not in windows\system32\ it will slow down your computer when your not paying attention Peter
maxes out my CPU. runs constantly ByggB
I only know i've never seen it before, I just endtask it for now. Jaxter
Colas is correct again! Disabled the indexing services under file search and CPU usage dropped from 100% to 2% Steve
can seriously slow down a system  See also: Link M Unas
Just kill this process. Does not do any harm. Only uses about 101% of CPU when in progress... Whenever my CPU utilisation runs high I just look for the ciscv.exe end end it - CPU usage drops to mere 1-10% immidiately as of result. t-omen
Microsoft Indexing Service - Not needed on most computers today. Duke
Windows Indexing service somtimes takes a lot of CPU usage slowing down performance jslfns
If it isn't dangerous, it uses resources just like 80% of XP's useless processes. Your_Name_Here
Often "takes over" CPU when you need it the most!  See also: Link Terje Moen
M$ index service to speed up searxh program, while slowing down the whole computer. Hmm Tman
Could be a trojan, keylogger, or Windows Indexing Service.
MSWinXP but cause CPU runs @ 100% speed as shown in Task Manager. minylites
it can be a Perfect Keylogger executable file, but it's a Windows file too Lukas
It keeps me from use search functions at the computer, takes a lot of CPU... When I shut it down (using ctrl+alt+del). The computer becomes normal! DELETE IT ! Oliver
Content Indexing Service part of the Windows OS
Indexes your entire HD, if you have lots of files it will use lots of RAM and CPU. Detects idle time by the amount of CPU and drive activity created by user. If you are reading mail, writing docs or similar low resource applications, system thinks PC is idle, hence will assign vast quantities of CPU cycles and RAM to index as quickly as possible. If it bothers you, turn off Indexing Servies, under the Find feature, as mentioned. Can be annoying if you start trying to use your PC while the indexing is running as takes a little time to give back system resources. Scrapper
This is usually part of Microsoft's operating system, it monitors the indexing service to make sure it doesn't use too much memory; however it can be a resource hog. You can uninstall the service from control panel add and remove programs. If you see two instances of this in task manager you probably have a keylogger. Leland
can hang the computer or slow it down so that no toher application can run
Cisvc.exe is part of Indexing Service  See also: Link PC Tech A.D.T.
Completely useless indexing file =) But I didn't understand where in the F3 search dialog to disable it, please tell me! Chris
microsoft, indexing service, can be enabled and disabled in "F3" search dialog Wes
I always immediately shut down this program whenever I start my computer up. If you leave it running, every now and then it will max out your CPU and your computer will stop responding, which needless to say is incredibly annoying. Bryan
Creates a plethoria of Page Faults Attila the Snail
It is Microsofts Indexing Service, not dangerous, just annoying  See also: Link JHSL
cisvc.exe is a process that belongs to the Microsoft Windows Operating System. It is used to monitor the memory usage in CIDAEMON.exe and prevent low memory problems. This is an essential system process and should not be removed. This program is an essential system process and should not be removed. Tear-a-bite
I have it cionstantly running Also its location is C:\WINDOWS\system32 and in C:\WINDOWS\dllcache. and when i try to turn it off in Find preferences it WAS ALLREADY OFF ... fiju
Indexing service. I used to not let this run, but lateley I've got it going, as it does speed up my PC searches drasticly. I'ts set as a ow priority so it takes a back seat when running PC. As mentioned above, it may take a little time to give beack the recourses, but for me right now it's worth it. Note: I've tried Google desktop search etc. in the past, and it requires the same type of index as well.
It never showed up on any scan until today. System slowed dramatically so I scanned with Spyware Detector which has been run many times on this machine and never alerted on the file. Today it did and found 32 related entries in the registry. Quarantined and deleted the file. Grasshopper
Trojan by blackcore/KillHouse Inc, If its sitting in yer temp directory, which it should not be (Its a sytem32 file) then BLAM...trojan. Antivirus will pick it up as such. Chris
It's a Windows component. But if you want to use video cutting software for generating new mpg or avi files there could be problems with the sync... means video and audio stream doesn't really fit anymore. Why? Indexing process works in a sporadic way! Poison for the synchronisation which needs constant access to the CPU! Patrick
It eats up my CPU processing power whenever I try to actually load anything. Disabling it Helped me, but i'm afraid to remove Mattiaus
if cpu is running 100% I kill off cisvc and it drops to 2% windoze
Cisvc is used to index your computers hard drive when your computer is idle, so next time you search, it will be "faster". It can be potentially dangerous however, if you are using an application that uses lots of power, and CiSvc decides to start indexing, it can heat your cpu to over 70*C. MBs without automatic fan control can potentially burn out. My core 2 duo reached 85*C, and the computer suddenly turned off to avoid damage to the cpu. Cisvc somtimes does not accuratly detect when the system is idle, and as a result, exessive CPU load can occure. Turn off! John
cisvc.exe is the biggest pain i have coem across for taking up CPU usages in my past 10 years of computer usage Tim
If you find yourself killing this process regularly, go to control panel, administrative tools, computer managment; look under service and application; go to indexing service and look at the start up type column. If it is automatic, change it to manual and it won't bother you again. snak123
Not spam. It's part of Indexing service  See also: Link Aris
This is a normal service to manager Indexing services. But it takes so much CPU so we should disable it! Autumnking
cripples search function/agree with oliver holzn1
Go to : Start = Control Panel = Administrative Tools = Services (Indexing Service=Disabeled) keshtkar
I agree with John's comment re heat. I assume it was turned on when I accidentally accessed the new "Windows Search" which appeared with XP Svs Pack 3. After accidentally restarting the indexing service, everything was slow, hard disk constantly on, and my overnight virus scan took over 12 hrs to complete. Not to mention that my laptop was actually hot when I touched it. Identified it with a freeware program called DiskAction2. Found instructions to disable, and all is well once again. Perhaps it performs better on some computers, but it was potentially very dangerous on mine! MaryLou
It's a useless resource hog and "end Task" doesn't hurt anything on XP sp3. Yes it can be disabled from the Services console under Indexing Service which apparently MS has no clue how to do. Devguy
Not dangerous, but better end that process. Rob Windows Now!
this file is the microsoft indexing edition but can be trojan horse or keylogger...  See also: Link Matan
For me the cisvc.exe uses CPU (30-40% constantly) only when my laptop (Lenovo T60) is connected to the docking station. The strange thing is that, if I open the CD-drawer when it contains a CD/DVD (blank or non-blank) it stops consuming CPU. If the drawer is empty, I need to put a CD in the drawer, close it and open it. Then its ok. Bodvar
Found this in Program Files (x86)\RapidBIT and NoVirusThanks.org flagged it as a Trojan Dropper. Even after completely denying access through Comodo Firewall I still couldn't delete it. A reboot into safemode was required to remove the file. Tim
Couldn't find any reason to let cisvc.exe live. It's a constant pain, filling the security log of some of my Win XP boxes. My suggestion is to set it to "disabled" in services.msc. CaptCarrot
dangerous to XP system operation since it hogs system brutally which can heat up processor as indicated by another reporter. Had to turn off search indexing. Microsoft needs to fix this!!! InTheValley
I disabled Indexing Service and the process cisvc.exe, the file was deleted from system32 but any time when I start my pc something recover the file from somewhere and run it. The only solution I have so far is to remove this file and create a file with the same name on the same place (read only, like calc.exe). This will stop recreating the original cisvc.exe. Still looking for solution! Assen
I agree with John & MaryLou. I could have fried an egg on my laptop until I set indexing services to manual startup. I was afraid my paperwork by the exhaust port was going to catch on fire. And hearing the fan running constantly was annoying, along with the fear of possible hardware damage, and wasted electricity. Gregory
on windows 8 use a lot of ram and cpu , often heat up both Catalin
cisvc.exe is the classic Windows NT 5.x file indexing service (not the "Windows Search 4.0" one, which is "searchindexer.exe") and perfectly safe on uninfected systems. Certain Malware may mask itself by using the same file name or by infecting the EXE however.  See also: Link Michael
was 4101 KB in C:\Inetpub\catalog.wci Gerry

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