I just downloaded the newest version of Firefox today because it is required for some of the websites I need for my college courses. However, every single website I go to (even the Mozilla site, Google, etc.) says that there's an "untrusted connection." On some sites I have an option between "Get me out of here!" or to add this particular site as a security exception. As you can probably imagine, this is very time consuming and frustrating. I have uninstalled the program (clean uninstall) and reinstalled it. I have reset Firefox, and nothing helps. The problem persists in Safe Mode as well. Along with this issue, every website I manage to get access to is all kinds of messed up. Modules are missing, or the whole page is blank. It can sit there for an hour and nothing loads. I have a good internet connection and fast processor. I was using Chrome before, and Internet Explorer with no issue. About two years ago I used Mozilla Firefox on this same computer and had no issues. I have a 64-bit system, which is the only issue I can think might be causing this problem. I have gone through and tried changing just about every setting, and nothing has helped. I am at my wit's end because I have homework to do and can't because of this problem.
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Check that the date and time on the computer is set correctly.
If the problem continues after checking the date and time please say what security related software you are using, because some security software may cause this sort of problem.
Check out why the site is untrusted (click "Technical Details to expand that section) and if this is caused by a missing intermediate certificate then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
- Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
- Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
Note that some firewalls monitor secure (https) connections and send their own certificate instead of the website's certificate.
- ESET Setup -> Advanced setup -> Web and email -> Protocol filtering -> SSL
- Certificates: Add the root certificate to known browsers
See also SSL protocol: Do not scan SSL protocol
After I went through the boot menu to see date and time (even though they were right already) it's running properly now. I should also say I ran my antivirus scans to double check and all came back clear so it really was just the time issue. Thank you both for your help :)
Glad it is fixed. Thanks for posting back, (even if we are not sure exactly what happened).