Unfortunately I am still having issues with Avast on the computers. As Milos posted a temporary work around is to rename “C:\Program Files\Avast Software\Avast\ashShell.dll” (this needs disabled self defense).

It’s surprising that while Avast apparently knew about the issue for a while with the self defense module that there hasn’t been a fix or roll back to a working version while all of the users are simply stuck waiting or manually implementing a temporary fix. Not sure it I will end of staying with Avast in the long run if they take so long to fix issues which should be quite high in priority.