procexp.exe is a Sysinternals Process Explorer
from Sysinternals
belonging to Process Explorer
. This is a tool that displays every process running on a machine and what resources they are using.
Non-system processes like procexp.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you
check your registry to identify slowdown issues.