Firefox untrusted connection warning, not date/time

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Dec 11, 2014
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Hi, I'm having an issue where the last couple days when I try to load up most sites on Firefox it tells me the connection is untrusted, and the following technical detail: "www.yahoo.com uses an invalid security certificate. The certificate is not trusted because no issuer chain was provided. (Error code: sec_error_unknown_issuer)"

I'm having a hard time figuring it out, and the common date/time solution won't work as mine are set correctly. I use a neighbor's connection and they're browsing Firefox just fine, so I'm sure it's an issue with my computer and not the connection. I'm on Windows 7 also. Any help would be greatly appreciated. :)
 

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Dec 11, 2014
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4,510


Thank you for responding. I actually forgot to mention it, but I've already tried that solution as well, and it didn't fix my problem. :(