csrss.exe is a process used by the Microsoft Client Server Runtime Subsystem to perform most of the graphical instructions on Windows PC.

How to tell if CSRSS.exe is a virus?

To find out if CSRSS (Client Server Runtime Process) is a virus or not, right-click on the csrss.exe process in Task Manager and click “Open File Location. It should be under C:\Windows\System32, if not, it’s a virus or malware.

What is CSRSS in Windows 7, Windows 8, 8.1, and Windows 10?

Windows 7 and later versions use the conhost.exe process instead of the csrss.exe process. Conhost.exe requires csrss to run whenever conhost needs to run.