My firewall is not working and won’t let me turn it on or FIX since the latest update.How can I get it working.
I assume this is the AIS firewall … In which case do the following :
Go Start > Control Panel . Programs and Features/Add Remove
Select Avast
On the left then select repair
Once done reboot and see if the Firewall is operative
Thank you essexboy your advice worked 
My pleasure 