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I get this message and site will not load"OCSP is not yet valid" how do I fix this

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MY system including firefox has begun not trusting any sites at all. I have to confirm exceptions to get onto the websites. All the certificates are bad "According to firefox" and after a while I get the OCSP is not yet valid error message too. what happens next??? can this be fixed?

MY system including firefox has begun not trusting any sites at all. I have to confirm exceptions to get onto the websites. All the certificates are bad "According to firefox" and after a while I get the OCSP is not yet valid error message too. what happens next??? can this be fixed?

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Is the Date / Time set correctly in Windows?

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Is the Date / Time set correctly in Windows?

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YES, thank you, solved the problems ...thanks

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You're welcome.

That may have been a fluke from yesterday's Daylight Savings time change here in North America, but if that happens again and you have a desktop PC the "coin" battery on the motherboard may need to be replaced.