What is the Client Server Runtime Process or csrss.exe and why is it running on the computer?

If you are using a Windows computer and open Task Manager, you will definitely see one or more Client Server Runtime Processes (csrss.exe) running on your computer. So what is the process, is it part of Windows? And why it runs on the computer? This article will explain these questions to you.

What is Client Server Runtime Process?

The csrss.exe process is an important part of the Windows operating system. Before Windows NT 4.0 was released in 1996, csrss.exe was responsible for the entire graphical subsystem, including window management, drawing everything on screen and other operating system functions concerned.

With Windows NT 4.0, many of the functions of the Client Server Runtime Process have been converted to Windows kernel and run as a normal process. However, the csrss.exe process is still responsible for the console windows and shutdown process, which are important functions of Windows.

Prior to Windows 7, the CSRSS process drew a console window (Command Prompt). On Windows 7 and later versions, the Console Host process (conhost.exe) performs this task. However, the csrss.exe process is still responsible for launching the conhost.exe process as needed. In other words, this process is responsible for some important system functions in the background. That’s how Windows works.

Is it possible to disable csrss.exe process?

You can not disable this process, as it is an important part of Windows and there is no reason to disable it because it only uses a small amount of resources and performs some important system functions. .

If you access Task Manager and try to end the Client Server Runtime Process, Windows will notice that your computer will be unusable or disabled. Click through this warning and you will see the message “Access is Denied”. This is a protected process, so you can not disable or terminate it.

Windows always launches this process at startup. If you can not launch csrss.exe when Windows starts, Windows will now display a blue screen with error code 0xC000021A.

Can csrss.exe become a virus?

The legitimate csrss.exe file is located in the C:Windowssystem32 directory on your system. To verify that it is a real Client Server Runtime Process, you can right-click Task Manager and select Open location location.

File Explorer or Windows Explorer will open the C:WindowsSystem32 folder that contains the csrss.exe file.

If someone tells you that the csrss.exe file located in C:WindowsSystem32 is a virus, it’s a hoax. This is the actual file and removing it will cause problems with your computer.

Other tech support scammers can tell you that if you see the csrss.exe file on your computer, it could be malware. This is wrong because every PC runs the Client Server Runtime process.

If you find the csrss.exe file in another folder is not a System32 folder, that means you have encountered a problem. Some malicious programs tamper with this process to avoid being suspected. In this case, you should scan the computer with effective antivirus software.