:-\ I now find I have a problem turning my Firewall on. When I click on turn on
firewall this is what I get is what is in this snapshot.
Try a repair of avast!
Program and Features > select avast! > scroll down and select Repair.
After it finishes, Reboot your system.
Let us know if that solves your problem. 
Your blood’s worth bottlin Bob !! Thanks a million, Avast is working like a charm.
All the best hoping you have a happy Easter
Ian
Thanks, glad I was able to help.
Enjoy your Easter as well.