system
7
I have the same problem with Avast Internet security version 2014.9.0.2008 on Windows 7 professional.
Since the upgrade to this version i had internet problems but it was working most of the time.
But today internet all internet traffic was blocked.
First i blamed my internet provider but in a bright moment i decided to disable Avast for 10 min and all internet problems were solved.
I have tried to find the cause of this problem but with no succes yet. I have set avast to ask me before blocking but i don’t get any messages from avast when internet is blocked.
The only solution that worked was to disable the firewall completely and enable the Windows firewall.