I’m having the exact same problem but I’m on Windows 8 x64 on a new system built from parts. If I disable webshield sometimes it can’t be re-enabled, but whether Webshield can or cannot be turned on I regain access to other internet sites besides google.
I am also able to connect to most web service Apps such as steam/origin during the time that i cannot access any webpages. I wonder if it’s something to do with my Qualcomm Atheros Killer Network Manager(this is the only ethernet port i have).
Any solution or help would be appreciated thanks.