FireFox SSL Certificate Errors (Stupid Popups)
August 21st, 2008 | by GTD Wannabe |For some reason, I kept getting popup dialogs every time I ran into a certificate problem, e.g.,
instead of the supposedly normal web page:
Notice that the web page has an option to add an exception, while the popup does not. It’s possible to add exceptions through options/advanced/whatever, but it’s easier this way.
I finally figured out how to fix it, based on some arcane tips buried deep in a Mozilla forum that helped. The key is to turn on the browser.xul.error_pages.enabled flag in the FireFox settings. To do this, go to the URL about:config in your FF browser. If necessary, agree to the warranty warning. Then use the filter to find the right flag. Double-click it to change it from false to true.
Now you can get an invalid certificate error, and still continue on.

3 Responses to “FireFox SSL Certificate Errors (Stupid Popups)”
By Balu on Aug 21, 2008 | Reply
browser.xul.error_pages.expert_bad_cert = true
This unhides the “add exception” button on the SSL error page, allowing users to directly accept a bad certificate.
browser.ssl_override_behavior = 2
While this pre-populates the current URL and pre-fetches the certificate.
Makes adding exception a lot easier :)