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All websites I go to suddenly have invalid certificates. They all present security concerns. Never ever happened before. Even you own site this happened with. what do I do

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Started with this problem a week ago. I cannot access any website without firefox saying that certificate is invalid and the site represents a security risk. Do I want to override. Then the whole process is circuitive. Something very wrong.

Started with this problem a week ago. I cannot access any website without firefox saying that certificate is invalid and the site represents a security risk. Do I want to override. Then the whole process is circuitive. Something very wrong.

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Did you check your security software (firewall)?

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Is the date / time on your PC correct?