The genuine cisvc.exe file is a software component of Microsoft Windows Operating System by Microsoft.
The indexing service built into Microsoft Windows, this application runs in the background and indexes search content through your machine. As you search your hard driver or external media, this process performs the indexing on the location and content, enabling your search to be performed faster and more efficiently. Founded in 1975, Microsoft's flagship product is the Windows operating system, which is installed on over 90% of workstations worldwide.
CIsvc stands for Content Index service
The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the cisvc.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
Description: The original cisvc.exe from Microsoft is an important part of Windows, but often causes problems. Cisvc.exe is located in the C:\Windows\System32 folder.
Known file sizes on Windows 10/8/7/XP are 5,632 bytes (90% of all occurrences), 6,656 bytes and 5 more variants.
The cisvc.exe file is a Windows system file. The program has no visible window. It is a trustworthy file from Microsoft. Therefore the technical security rating is 4% dangerous; however you should also read the user reviews.
Recommended: Identify cisvc.exe related errors
Is cisvc.exe a virus? No, it is not. The true cisvc.exe file is a safe Microsoft Windows system process, called "Content Index service".
However, writers of malware programs, such as viruses, worms, and Trojans deliberately give their processes the same file name to escape detection. Viruses with the same file name are such as TROJ_SPNR.08CO15 or TROJ_HORST.SMPE (detected by TrendMicro), and Win64:Dropper-gen [Drp] or Win32:Rodecap (detected by Avast).
To ensure that no rogue cisvc.exe is running on your PC, click here to run a Free Malware Scan.
How to recognize suspicious variants?
External information from Paul Collins:
Important: Some malware disguises itself as cisvc.exe, particularly when not located in the C:\Windows\System32 folder. Therefore, you should check the cisvc.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with cisvc. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the cisvc.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.