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Firefox will not open any search query with any search engine. All are UNTRUSTED.

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I am unable to go any search engine site or use any search engine, including yahoo, bing and google. I keep getting a message saying "Your connection is not secure". When I click advanced it says whatever site "uses an invalid certificate" and I am unable to add it as an exception. The error code is SEC_ERROR_UNKNOWN_ISSUER.

I am unable to go any search engine site or use any search engine, including yahoo, bing and google. I keep getting a message saying "Your connection is not secure". When I click advanced it says whatever site "uses an invalid certificate" and I am unable to add it as an exception. The error code is SEC_ERROR_UNKNOWN_ISSUER.

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This must be pretty annoying .....

I don't know what kind of security software you use (if any at all), but would you please read this article :

https://support.mozilla.org/en-US/kb/error-codes-secure-websites