Avast Safe Zone and Windows 8

I used Avast Internet Security at home on a Windows 8 OS and at work on a Windows 7 OS. Everything works okay at work, including SafeZone (browser Chrome). At home though everything works except the SafeZone browser - the browser (Chrome) opens up, can see the URL bar, but cannot see any website content when I enter a URL address. A known issue? Any fixes?
Thanks
Mark