AT100-100 Internet Issues. "Couldn't establish a secure connection"

AT100-100, android version 4.0.4.05.000083019.

When I'm on wifi, I get the "couldn't establish a secure connection" on all websites.

On the other hand, I'm able to access my gmail app on the tab.

what do I do? please help.

P.S.: Uninstalling, clearing caches, rebooting.....the works. I've tried everything. It's a no go.