Firefox can't load https websites
I can't load all https websites by Firefox in my PC, while other browser can do it. It has been happened since about 1 week ago. The message error is This Connection is Untrusted.
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What security (anti-virus) software do you have?
Some security software intercept secure connections and send their own certificate.
You can check the date and time and time zone in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
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 the intermediate certificates that are used in the Detail tab.
Who is the issuer of the certificate?
If you can't inspect the certificate via "I Understand the Risks" then try this:
Open the "Add Security Exception" window by pasting or typing this URI in the Firefox location/address bar and check the certificate:
- chrome://pippki/content/exceptionDialog.xul
In the location field of this window type or paste the URL of the website.
- retrieve the certificate via the "Get certificate" button
- click the "View..." button to inspect the certificate in the Certificate Viewer