You could try checking the following:
Click Web and Email Protection
Click Internet Connections for Programs
(Hint: Once loaded, it takes a while, click the word 'Program' at the top to rearrange them alphabetically)
Locate your browser(s) and make sure they have Full access, using the Edit button if need be.
If that doesn't help I would reopne the case with technical Support and this time ask for escalation.
I personally haven't encountered this problem so not too sure what's going on.