OK, I see the problem, it is a battle of wills as there are constantly changing and they are being challenged.

I’m also having my Firewall jump all over this too so it is a pit like pop-up central.

So you may have to Stop both the Behavior Shield (10 minutes should do it) and uncheck the Enable AutoSandbox in the Additional Protection, AutoSandbox, Settings.

This should allow it to run, as far as avast is concerned, if you have UAC, I don’t know if that might jump in or if your firewall might have something to say about it.