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cannot "Add Exception" for an untrusted connection

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New User

cannot "Add Exception" for an untrusted connection

I visit a few known intranet locations that do not have proper certificates installed; therefore, I receive the "This Connection is Untrusted" notice.

In 3.x versions of Firefox, I could click the "Add Exception" button to add an exception and continue to the site.

In 4.x versions of Firefox, the "Add Exception" button simply doesn't work. There is no way to add an exception from the "This Connection is Untrusted" screen.

21 REPLIES
Mozilla Support Contributor

Re: cannot "Add Exception" for an untrusted connection

This features still exists, but I wonder whether a setting might be blocking it. Are you saying that if you click the "Add Exception" button nothing happens, the dialog does not open? Or the dialog opens but it doesn't work?

2011-05-10-11-56-00-bd3011.png
Site Moderator

Re: cannot "Add Exception" for an untrusted connection

If you can't add an exception via the Error page then try to do that in the Certificate Manager.

  • Tools > Options > Advanced : Encryption: Certificates - View Certificates > Servers
New User

Re: cannot "Add Exception" for an untrusted connection

When clicking the "Add Exception" button, literally nothing happens. No dialog or additional window opens. It is as if I had never clicked the button. I can click it 5,000 times and nothing happens.

Re: cannot "Add Exception" for an untrusted connection

I tried this, but still wasn't able to add the exception (or get it to work correctly). Thank you though for the info.

New User

Re: cannot "Add Exception" for an untrusted connection

@ultrafox and Tino@TUG, you can try the method posted by @cor-el. It works perfectly for me

New User

Re: cannot "Add Exception" for an untrusted connection

The workaround may work, but the intended functionality for the screen is still broken.

New User

Re: cannot "Add Exception" for an untrusted connection

I agree. Having a workaround does not mean the feature is working. To me it is a bug and an annoying one, too.

Mozilla Support Contributor

Re: cannot "Add Exception" for an untrusted connection

I would be annoyed, too. Can someone who has this problem test in Firefox's Safe Mode? If that works, then an add-on probably is causing the problem.

I recommend backing up your Firefox settings in case something goes wrong. See Backing up your information. (You can copy your entire Firefox profile folder somewhere outside of the Mozilla folder.)

Next, try starting Firefox in Firefox Safe Mode. Be careful not to "reset" anything permanently if you didn't back up.

Does the button work?

Site Moderator

Re: cannot "Add Exception" for an untrusted connection

It is possible that you can't add an exception if there are specific problems like in this case where there is a certificate that may have been valid in the past. You probably can't add an exception if the certificate has been revoked or otherwise got invalidated. Security gets stricter with every new Firefox version.