Im no pro on fixing problems but i do believe Windows has plenty fixes on some windows errors and problem.
I also know that some windows update mess up the system.
But i do believe when things go wrong they fix the problem.
They have a forum. That what is used for.
I dont want make this thread to be debate as this is a avast forum and im loyal on Avast.
And i know the majority for this.
About the AV comparatives? it is explain that 5.0.396 if not mistaken this version has a problem on heuristic which AV comparatives use to test.
But AV comparative is a good guide for people choosing AV's.
Its just my opinion only.
Sory for that.