How can I make sure it never restarts itself again ? I had the WaaSMedicSvc service disabled reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WaaSMedicSvc" /v Start /t REG_DWORD /d 4 /f And the Windows update service itself. I have re-installed windows 3 weeks ago and it had never started itself. What did I do to trigger this ? How can I make sure it does not restart again ? I need a windows automatic update supressor, does such a thing exists ?