The answer is the same as the last time you asked this question.

• https://support.mozilla.org/questions/938806

As more information has come to light about the attack on the DigiNotar Certificate Authority we have improved the protections added in MFSA 2011-34. The main change is to add explicit distrust to the DigiNotar root certificate and several intermediates. Removing the root as in our previous fix meant the certificates could be considered valid if cross-signed by another Certificate Authority. Importantly this list of distrusted certificates includes the "PKIOverheid" (PKIGovernment) intermediates under DigiNotar's control that did not chain to DigiNotar's root and were not previously blocked.

• http://www.mozilla.org/security/announce/2011/mfsa2011-35.html

Perhaps your head is stuck in the past Gingerbread_Man.

I said its Firefox 21which came out in 2013. There should be no Diginotar certificate. On On September 3, 2011 Digitnotar went bankrupt. https://en.wikipedia.org/wiki/DigiNotar

There shouldn't be any DigiNotar certificates present under the Authorities tab in the Certificate Manager, but there should be permanent block entries under the Servers tab.

• Firefox > Preferences > Advanced : Encryption: Certificates - View Certificates

Select a DigiNotar certificate in the Certificate Manager > Servers.

• Click the "Edit Trust" button to verify that the certificate is not trusted and "Do not trust the authenticity of this certificate" is selected.

cor-el wrote:

Click the "Edit Trust" button to verify that the certificate is not trusted and "Do not trust the authenticity of this certificate" is selected.

That's exactly what I said last time.

mace2 wrote:

Perhaps your head is stuck in the past Gingerbread_Man.

Learn some manners, then feel free to ask your question where it's more likely to be seen by a developer, like on IRC or a newsgroup like mozilla.dev.security.policy

• https://wiki.mozilla.org/IRC
• http://www.mozilla.org/about/forums/

I installed Firefox 22 same on my Mac witch has both windows 7 and Mac OS Moutain Liion and the windows 7 found the web site https://www.faxzero.com valid.

Same computer 2 different operating systems windows 7 firefox 22 works but Snow leopard Firefox 22 does not work