After having this issue as well and trying all the solutions being banded about and also considering that Avast itself do not seem to care to provide a fix, I came up with my own innovative solution:
Uninstall Avast and installed Avira instead. Afterall, Avira now has better recommendations than Avast.
Sad to do this after being religiously with Avast since early 2000s.
But Hey-Ho!!
Problem solved.
