I cannot access any site with https.

[Salbazier]

As it says on the tin. I was browsing just fine and suddenly I cannot access any site with https. I've tried tinkering with some options in about:config, using older version of firefox, clearing cache, no effect. Also happen with firefox.

Help please?

EDIT: also for a moment I cannot access even google and must do it through Chrome but that works after I downgrade firefox.

EDIT2: And now it somehow got fixed by itself -_-. Sorry to bother. Still, anyone have a clue why this happened?

[Flickerdart]

It depends on the error message you were getting.

It's possible that your date/time settings were off, making your browser refuse to accept security certificates from the future.