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Suddenly, the sites I normally browse are considered untrusted. Why?

illigi
illigi
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I have Windows 10. Automatic updates were made last night. Now, standard pages such as my Google homepage, Facebook and Youtube are considered untrusted. I find it suspicious that Bing (the competition) is perfectly secure and opens just fine. I tried uploading a screenshot but it didn't work. Below is the copy and pasted text from the screenshot:

"You have asked Firefox to connect securely to www.google.com, but we can't confirm that your connection is secure.

Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do?

If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue.

This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate.

Technical details: www.google.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. (Error code: sec_error_unknown_issuer)"

I have Windows 10. Automatic updates were made last night. Now, standard pages such as my Google homepage, Facebook and Youtube are considered untrusted. I find it suspicious that Bing (the competition) is perfectly secure and opens just fine. I tried uploading a screenshot but it didn't work. Below is the copy and pasted text from the screenshot: "You have asked Firefox to connect securely to www.google.com, but we can't confirm that your connection is secure. Normally, when you try to connect securely, sites will present trusted identification to prove that you are going to the right place. However, this site's identity can't be verified. What Should I Do? If you usually connect to this site without problems, this error could mean that someone is trying to impersonate the site, and you shouldn't continue. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. As a result, it is not possible to add an exception for this certificate. Technical details: www.google.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. (Error code: sec_error_unknown_issuer)"

Todas las respuestas (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Hmm, two thoughts:

(1) Did the Refresh feature run during your Firefox update? This can occur when Firefox starts slowly and shows a button to speed it up by restoring some default settings. If you click that button, your settings folder is moved to the desktop inside an Old Firefox Data folder. Do you see anything like that?

(2) Did Kaspersky just update from 2015 to 2016? Some users need to manually set up Firefox to work with Kaspersky's SSL filtering feature.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Oh, Windows updates. Did you already try shutting down and starting Windows back up again? Sometimes after Windows updates there are permission/privilege issues with Firefox's settings folder that are instantly fixed by restarting Windows.