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Downloaded the newest version, now won't connect to facebook, says it's certificate is invalid, won

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FGriffin
FGriffin
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Downloaded the latest update, now I can't access facebook and a lot of other sites. The message that facebook has improperly configured its certificate appears, will no allow exception. Re installed, still a problem. Firefox screwed something up with the download.

Downloaded the latest update, now I can't access facebook and a lot of other sites. The message that facebook has improperly configured its certificate appears, will no allow exception. Re installed, still a problem. Firefox screwed something up with the download.

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FredMcD
FredMcD
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There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own.

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

Websites don't load - troubleshoot and fix error messages

http://kb.mozillazine.org/Error_loading_websites


  • uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
  • configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

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