How to remove the crrss virus

Most antivirus programs identify crrss.exe as malware—for example Symantec identifies it as Trojan.Gen or Backdoor.Trojan, and Microsoft identifies it as Trojan:Win32/Opachki.H.

The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.

Click to Run a Free Virus Scan for the crrss.exe malware

Crrss.exe file information

Windows Task Manager with crrss
Crrss.exe process in Windows Task Manager

The process known as EXE-Blocker or Metro belongs to software EXE-Blocker or Metronom by Bernd Theilacker, OGGISOFT or M+M Systeme.

Description: Crrss.exe is not essential for Windows and will often cause problems. The crrss.exe file is located in the C:\Windows\System32 folder. Known file sizes on Windows 10/8/7/XP are 33,792 bytes (25% of all occurrences), 51,712 bytes and 5 more variants. 
Crrss.exe is an unknown file in the Windows folder. The program is not visible. The program starts when Windows starts (see Registry key: MACHINE\Run, Userinit). Crrss.exe is not a Windows system file. Therefore the technical security rating is 62% dangerous, however you should also read the user reviews.

Recommended: Identify crrss.exe related errors

Important: You should check the crrss.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.


User Comments

See Microsoft file on this
  d   (further information)
FYI On my winxp PC runs csrss.exe. I have no crrss.exe process and file in ../system32

Summary: Average user rating of crrss.exe: based on 2 votes with 2 user comments. One user thinks it's neither essential nor dangerous. One user thinks crrss.exe is dangerous and recommends removing it.

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Best practices for resolving crrss issues

The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active crrss process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the crrss.exe on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.

A clean and tidy computer is the key requirement for avoiding PC trouble. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

Other processes

crrss.exe [all]