Security certificate is no longer valid after the upgrade to the latest FF.

I've upgraded to the latest version of FF over the weekend and now I can't access a site that I had been accessing for the following error message:
An error occurred during a connection to grdpmgr01.dmz.domainname.com:7799.
The issuer certificate is not valid. (Error code: sec_error_ca_cert_invalid)

The certificate is self-signed. We have a similar problem with IE that we by-passed.

You can try setting security.use_mozillapkix_verification to false on the topic: config page as a test to see if it has an impact.

Tags: Firefox

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