Can you be a little more specific, like the exact error text or screenshot of the error.

If there is an interaction like with another AV or security application that is causing avast to disable a module then that same issue would be present when trying to do a manual start. Since you didn’t mention what module/provider I can’t even guess ?

Have (or did) you another AV installed in this system, if so what was it and how did you get rid of it ?

What other security based software do you have an effect, e.g. Spybot S&D (TeaTimer), AdAware (AdWatch), SpySweeper, Spyware Doctor (StartUpGuard or OnGuard), PrevX, WinPatrol, ProcessGuard, etc. ?

I’m just about to turn in for the night almost 2 a.m. here, hopefully one of the other forum members wil pick up with yoyr additional information.