What's Overseer.exe Overseer.exe is not essential for Windows and will often cause problems like "cause high cpu". The overseer.exe file is located in a subfolder of "C:\Program Files\Common Files" or sometimes in a subfolder of "C:\Program Files" (common is C:\Program Files\Common Files\AVAST Software\Overseer\ or C:\Program Files\Common Files\AVG\Overseer\) The process known as Avast Overseer or AVG Overseer or Avast OverSeer Overseer belongs to software AVAST Software or AVG Technologies Removing the overseer task Click the Start icon, start typing “scheduler”, and click on Task Scheduler when it appears in the results. you can follow this to full remove overseer.exe .... Re-install Avast again