Actually I've logged to post about this.
I'm having the same exact issue.
After the latest software update, Avast firewall keeps asking me about each connection every time I:
- Restart/shutdown PC.
- Re/connect to the internet.
- Disable and renabling Avast.
Despite having the rules saved as allow, it just keeps asking over and over.
And it's getting really annoying.
It's even asking me about Avast connections.
Uninstalled, then downloaded Avast and installed it again, still persist.