All of a sudden, after a update of firefox, I get "this connection is untrusted" for Facebook, no matter if I use http: or https:, WHY?
All of a sudden, after a update of firefox, I get "this connection is untrusted" for Facebook, no matter if I use http: or https:, WHY? Here are all the details of the error message:
This connection is Untrusted
You asked Firefox to connect safely to facebook.com, but we cannot confirm that your connection is secure.
Normally, when you try to connect safely, sites will present a reliable identification to prove that you're in the right place. However, the identity of this site cannot be verified.
What should I do?
If you normally connect to this site without problems, this error can mean that someone is trying to impersonate the identity of the site, and you should not continue.
This site uses HTTP Strict Transport Security (HST) to specify that Firefox didn't connect safely. As a result, it is not possible to add an exception for this certificate.
Facebook.com uses an invalid security certificate.
The certificate is not trusted because the issuer certificate is unknown.
(Error code: sec_error_unknown_issuer)
(Also included a screenshot).
COR - el said
You can check the date and time and time zone in the clock on your computer: (double) click on the clock icon in the Windows taskbar.
You can retrieve the certificate and check details such as WHO issued the certificates and the expiration dates of certificates.
- Click on the link at the bottom of the error page: "I understand the risks".
- Let Firefox recover the certificate: "Add Exception"-> "get certificate".
- Click on the button "View" and inspect the certificate and the Coachman, who is the issuer.
You can see more details like the intermediate certificates that are used in the Details tab.
If you cannot inspect the certificate by "I understand the risks", then try this:
Open the chrome URI by pasting or typing this URI in the address bar to open the window "Add the Security Exception" and to check the certificate:
- chrome://pippki/content/exceptionDialog.XUL
In the field location type and paste the URL of the Web site
- retrieve the certificate via the button 'Get certificate '.
- Click on the "view..." button. "to inspect the certificate in the certificate display
Check which is the issuer of the certificate.
You can get more details like the certificate chain in the Details tab of the certificate display.
Tags: Firefox
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