This started happening to me as well about a week ago. Tried doing the repair, disabled various components, but none of it helped.
Finally did a clean reinstall last night and so far, so good.
The interesting thing is that, while searching for info on this problem, I found posts 7-8 years old describing the same problem. Why is this such a frequent issue with Avast?
Someone could say "hey, it's free so what are you complaining about", but I pay for a 3 seat license. Expect that a product I pay for wouldn't have the same issue happen over and over again for at least last 7 years.