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Most of the URLs cause SEC_ERROR_UNKNOWN_ISSUER

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  • 1 has this problem
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  • Last reply by philipp

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OS : Windows 7 AV : Bitdefender Antivirus Free Edition

Tried the following as found in Mozilla support pages: 1. https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

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

In my Bitdefender there is no option for "Web Protection" or "Toggle off the Scan SSL setting". Is there some thing I've missed to try? If the real problem is with the certificates how other browsers do not throw such an error?

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hi, can please also give us more information about the error by clicking on the error code, copying the text to the clipboard and then pasting it here into a reply in the forum like shown in the screenshot.

thank you!