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Unknown
Safe
User Optional
Unwanted
Spyware / Adware
Virus

More than one possible match was found; all matches are listed below in order of their prevalence. This only tells you what the file and the correct action might be.

To understand which possibility is actually running on your own system, perform an Overdrive test and then look at the Software|Processes tab.

You may find more information on this process by visiting Process Detail Pages.

Prevalence

Percentage of recently scanned PC's with this process running: 3.11%
Average CPU use for this program: 0%
Average RAM for this program: 3 MB

Identification

In addition to the file name, csrss.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

To view version information with Windows Explorer, right-click the file and click Properties, Version.

PC Pitstop Analysis

csrss.exe - Client Server Runtime Server Subsystem. It is responsible for console program, threads managing and supporting for 16-bit virtual MS-DOS environment.

Attention with the Vendor, Product match and Path. If it's not the same it migh be a virus.

If you have problems with csrss.exe you may want take a look in these links:

http://support.microsoft.com/kb/934330
http://support.microsoft.com/kb/555021

csrss.exe  is required by third-party software or hardware and should not disabled.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides an easy to understand descriptions of over 15,000 processes and programs.

MD5 Hashes

MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called csrss.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Prevalence

Percentage of recently scanned PC's with this process running: 0.00%
Average CPU use for this program: 0%
Average RAM for this program: 2 MB

Identification

The file name alone identifies this program.

PC Pitstop Analysis

csrss.exe - Part of the Agobot virus or other similar virus. (There is a legitimate CSRSS.EXE file in Windows 2000/XP/Vista, but it is in the System32 directory and has vendor information that indicates it is written by Microsoft.)

csrss.exe is a VIRUS. Stop all work until the virus is removed or you run the risk of spreading the virus to other people. Worse yet, the virus may be doing harm to your computer and your information.

csrss.exe is a virus and should be removed immediately to avoid doing further harm. PC Pitstop recommends PC Matic in these types of situations.

MD5 Hashes

MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called csrss.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Prevalence

Percentage of recently scanned PC's with this process running: 0.00%
Average CPU use for this program: 0%
Average RAM for this program: 12 MB

Identification

In addition to the file name, csrss.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

To view version information with Windows Explorer, right-click the file and click Properties, Version.

PC Pitstop Analysis

csrss.exe -

csrss.exe  is returning insufficient information about this program.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides an easy to understand descriptions of over 15,000 processes and programs.

Try a free diagnostic now

PC Pitstop is the undisputed leader in PC diagnostics. Our running process library is culled from our database of over 100 million PC diagnostics and scans.

To find the latest driver for your computer we recommend running our Free Driver Scan.

Find out how to make your computer faster by running our Free Performance Scan.

Tips from the PitCrew

Every process running on your computer takes up CPU cycles and valuable memory. For optimal PC performance and resource utilization, you should be aware of every process on your computer. PC Pitstop designed this process library to help you know which processes are worthwhile and others that slow system performance.

Important Note

A file name alone may not be enough for positive identification. PC Pitstop's Overdrive tests and spyware scan use information such as the company name, product name, or install directory.

If you are unable to identify a file, ask about it in our forums after running our full tests.