I've seen some similar issues strewn throughout Google's results about this, but none seem to be corporate-specific.
I continually get the 'This connection is untrusted' screen every time I attempt to log into a secure site…for instance Gmail.
This is pretty annoying as sometimes I have to go through the process of adding the exception two or three times before it finally lets me into Gmail.
I am behind a corporate firewall, going through an internal proxy server to get to the Internet, so there is no possibility for me to update the firewall…etc.
Does anybody know a way around this? Can it simply be disabled (and is that safe)?
EDIT
I'm going to reopen this question with a bit of new information.
I have been using Google Chrome lately until today, and one thing that I noticed was that I never had this issue when using either Chrome or Internet Explorer. Is there something that these other browsers do that I need to manually do in FF?
Best Answer
If your system date or time is not wrong, and your problem is still not resolved, try the following. Because this problem is occurring only in your Firefox, but not IE, navigate to the secure site in IE, and determine which certificate is being used, which will be an icon somewhere around the menu bar. Then go to IE > Tools > Internet options > Content > Certificates > Trusted root certificate authorities (or maybe Intermediate certificate authorities), and find the certificate. When you find it, select Export, to export the certificate, in the default format.
Now go to Firefox > Tools > Options > Advanced > Encryption > View certifications > Authorities, and look for a certificate(s) with a similar name. If you find one, press Export, to export a backup copy of it. Now import into Firefox Authorities the certificate you exported from IE. Exit and restart Firefox. See if the "untrusted connection" problem is now fixed. If not, you could delete the imported certificate, if you wish. If problems arise, import back into Firefox Authorities the original Firefox certificate you backed up.
As soon as you finish, and everything is working OK, delete the certificates you exported, because they must be kept secure and must not be kept as files on your computer.