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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.

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Have you checked that the clock in your computer is set to the right date?

Also, what sites? Maybe they actually are expired...

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  • 2
    +1 for a suggestion I will file for future reference! – squillman Mar 14 '11 at 19:19
  • +1 - 9.5 out of 10 cases this happens is indeed due to a wrongly set system clock. – Pylsa Mar 14 '11 at 19:52
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    Poor guy reinstalled Windows! – slhck Mar 14 '11 at 20:00
  • 6
    Could be due to a dead CMOS battery – ChrisF Mar 14 '11 at 20:11
  • How convenient. Right after daylight savings time..... – John Mar 15 '11 at 1:08

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