I have used my firefox browser for years without any problems. Few days all the sites I go to give me the warning message that "This Connection is Untrusted." I can no longer access email or any website i used to visit daily - nothing works. Even when I click that I understand the risks and verify the certificate, I can still only get so far- but it's never all the way to where I need to be.
i searched for solution for 2 days waiting replies from support and forums members
Until i found this solution in this very short video :)
so, i shared it here to all because it was very simple solution