I had the same problem and tried the repair. After which it has only been partially restored.

The repair function was finished really quick. And after a restart, I get the yellow warning sign, instead of the red one. So it’s progress.

Still, not everything is fixed and clicking the restore now button still doesn’t do anything. I tried ending all instances of Avast thru task manager but then I get “access denied”. The only shield not functioning is the “Web Shield”.

How can I fix this?