Help with secure sites

[oe-la-la]

Since the weekend we can just not access any secure site, everything else is working fine, but the minute it leads to any personal details to be filled in it just says page cannot be displayed.

In some forums they mention about port 443 that might be closed by Norton, but where the heck do you unblock it?? We didnt install anything new, or changed any settings either....

Please any advise will be helpful as I am :wall:

:thx: