I’ve just downloaded the 20 day free trail of Avast and installed it. Now the Avast firewall wont start.
can anyone help?
My OS is windows xp pro sp 3.
Can you try to repair your installation?
Go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose Repair function in the popup window (Repair).
If this does not help, can you uninstall / boot / install / boot again?
Did you use any other antivirus or firewall before avast?
Tryed to repair and it has fixed the problem.
thanks for the help. 
Repairing Program worked…
Thanks !!