Windows subsystem

The following dlls implement crticial functionality for the Windows subsystem:

• basesrv.dll
• csrsrv.dll
• sxssrv.dll
• winsrv.dll

These DLLs are loaded by csrss.exe and are responsible for handling mouse and keyoboard input, housekeeping, terminating processes (ExitWindowsEx), Side-by-Side (SxS) fustion and manifest cache support etc.