Hi,
If you no longer use Process Explorer, you can permanently remove this software and thus procexp.exe from your PC. To do this, press the Windows key + R at the same time and then type 'appwiz.cpl'. Then find Process Explorer in the list of installed programs and uninstall this application.
Note: The procexp.exe file should be located in the folder C:\Program Files\processexplorer. Otherwise, it could be a Trojan.