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Websites blocked; security connection failed message is SEC_ERROR_BAD_SIGNATURE, therefore need a quick solution or discontinue using Firefox

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  • Last reply by FredMcD

DonJScott
DonJScott
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More and more of my favorite websites are blocked, so increasingly having to use MS Edge as a default browser. It is very frustrating so a solution would be most welcome. I can't even use this Mozilla help website so have had to use MS Edge to convey this message.

More and more of my favorite websites are blocked, so increasingly having to use MS Edge as a default browser. It is very frustrating so a solution would be most welcome. I can't even use this Mozilla help website so have had to use MS Edge to convey this message.

All Replies (1)

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

What do the security warning codes mean