system
11
Just to close off this thread, problem resolved.
After an uninstall and a fresh install nothing changed. Still no alarm warning pop up.
Eventually I received the tip to run mcrepair BUT there is a twist in applying it.
“Select yes to all questions. It will replace the four dll files (oleaut32.dll, olepro32.dll, stdole32.tlb & ascyfilt32.dll) with correct / compatible versions.”
I therefore replaced newer versions, currently installed on my puter, with older versions and that restored the missing pop up of Avast.
Normally I would have selected NO when given such an option.
This problem may have been caused by some or other prog I’ve installed but I would have not noticed it because I did not receive a virus.
Tested it with an Eicar file and all fine.
Regards