Suddenly all https sites have expired certificates on all browsers, even formatting and reinstalling Windows didn't work! I tried many different connections as well.
Have you checked that the clock in your computer is set to the right date?
Also, what sites? Maybe they actually are expired...
|show 3 more comments|
I have seen this after creating a test AD CS server on my domain. It was a lone CA and no external certificates were working. Probably not your case, as it should have been documented if a CA came up in your infrastructure. But just in-case, also I cannot leave comments. :(