What is PenService.exe

PenService.exe is penservice.exe is part of the Windows Ink Services Platform Tablet Input Subsystem program (WISPTIS) and is used to implement Microsoft Tablet PC functionality. More information about the Pen Service can be found on the wisptis.exe page. 

Note: The PenService.exe file is located in the folder C:WindowsSystem32. In other cases, PenService.exe is a virus, spyware, trojan or worm!