Firefox - Secure Connection Failed

After updating the security certificate on our SSRS server (using our locally managed CERT server), we ran into an issue where Firefox users would see a "Secure Connection Failed" issue. The error dialog looked like this:

The fix we found is posted on the Mozilla support archive here: https://support.mozilla.org/en-US/questions/939141

The basic approach follows:

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

• • Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"

"Remove Cookies" from sites causing problems:

• • Tools > Options > Privacy > Cookies: "Show Cookies"

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

If that helped to solve the problem then you can remove the renamed cert8.db.old file. Otherwise you can rename (or copy) the cert8.db.old file to cert8.db to restore the previous intermediate certificates. Firefox will automatically store intermediate certificates when you visit websites that send such a certificate.

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

You can use this button to go to the Firefox profile folder:

• • Help > Troubleshooting Information > Profile Directory: Show Folder