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I've got a weird problem with my Firefox 27.0.1: Literally any webpage I want to visit is automatically requested via HTTPS, and that means I constantly get "Untrusted Connection" warnings - see first image below.

I am forced to either give up or accept a certificate exception for the site (see second image below). As a workaround, I can add an exception manually but this gets tedious real quick, because it needs to be done for every site I visit.

What is causing this annoying behavior, if it's not the HTTPS Everywhere plugin?

I had the HTTPS Everywhere plugin installed and I disabled that - it didn't solve the problem so I uninstalled it instead. That still has not solved the problem. Could it be something about the corporate firewall that has been changed?

enter image description here

enter image description here

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Did you disable it or uninstall it? Does the same issue occur in IE or in FireFox when in safe mode? – Dave Mar 4 '14 at 9:14
I only disabled it, and even rebooted. I've now really uninstalled it and restarted Firefox - and the problem is gone. ("WTF?") – Torben Gundtofte-Bruun Mar 4 '14 at 9:22
After uninstalling HTTPS-everywhere the problem seemed to be gone, but it's not. Something else is causing this problem. – Torben Gundtofte-Bruun Mar 11 '14 at 7:55

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