crss.exe is a part of the Microsoft Client/Server Runtime Server Subsystem. This process if responsible for the user side subsystem, which is the creation and deletion of windows and threads. This program is important for the stable and secure running of your computer and should not be terminated.
Traduction: fait chier, démerde toi, j´ai pas mis 5 secondes sous google pour trouver, alors cherche avant de demander...
un seul truc à savoir, c´est un processus normal de windows