I am hoping for some help with my husband's computer. We had Microsoft Security Essentials installed but at some point it disappeared from the tray and the computer is now thoroughly infected. When I try to open MSE I get a message saying it is blocked by group policy. When I try to uninstall MSE (to reinstall it) I get a message saying that I don't have access to uninstall the program. The computer is a personal pc and was never used for business.
I did run Malwarebytes and it found several trojans,
I also downloaded several fixes to a thumb drive because I would get the same error message when I tried to download these fixes to the infected computer. I ran these fixes including FixZeroAccess, ESETSirefefCleaner, ComboFix and the McAfee removal tool for ZeroAccess rootkit.
I can open MSE in safe mode but cannot update definitions or uninstall it.
If anyone has any ideas I would be very grateful.