Question Csrss.exe being in system32 but also in another place.

[Themasterofw]

So I know its not malicious but why is it here in this location ( C:\Windows\WinSxS\amd64_microsoft-windows-csrss_31bf3856ad364e35_10.0.17134.1_none_3e64702f4d401436) as well as in the system32 folder.
Also the two I have running both say they are from the system 32 folder, I am really curious.

They both have the same signature and windows verifies that they are correct and not altered.

 

[rgd1101]

https://www.laptopmag.com/articles/clean-winsxs-folder-to-save-space

 

[Colif]

The one marked Windows\WinSxS\amd64_microsoft-windows-csrss is likely the 64 bit client,
the one in system32 folder is probably the 32bit client

csrss.exe is the client service for your user, so it has 2 different versions based on what the program you are running is, 32bit or 64bit.