Connection failed - can not confirm security (since updated to 31) exception

This morning I was able to access to our installation of plesk for our server (I had previously confirmed the security exception after receiving the warning) without problem. Then firefox updated to 31 and now it gives me this error:
The secure connection failed

An error occurred during a connection to (* website *). The issuer certificate is not valid. (Error code: sec_error_ca_cert_invalid)

With no option to confirm any security exception. I am still able to access it through Chrome, but we all use firefox here (and would like to continue to do so). I checked on computers that have not updated yet and they have managed to get in again, I updated one of them and now they get the same error, so it's a matter of firefox with the new update.

Any help would be appreciated!

Can you put the bug for reference number?

You can try to rename the file cert8.db in the Firefox profile in cert8.db.old folder or delete the cert8.db file to remove the intermediate certificates that Firefox has stored.

If it helped to solve the problem, then you can delete the renamed file cert8.db.old.
Otherwise you can rename (or copy) the file cert8.db.old to cert8.db to restore previous intermediary certificates.
Firefox automatically records the intermediate certificates when you visit Web sites that send such a certificate.

If that didn't help then remove or rename secmod.db (secmod.db.old) as well.

Tags: Firefox

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