I tried to open the "Add Security Exception" tab and get a certificate, but he says that he cannot get the certificate.

Firefox is denying me access to Facebook, as well as my Amazon account, as it is said that he cannot trust the certificate. I tried to do what the forum said, will "Add Security Exception" and paste address FB, but it just says: can not get the certificate. This happened only recently, since I've upgraded to Windows 10. Who would have something to do with it?

It's extremely frustrating, and after using Firefox for many years, I am ready to go to the Chrome or even... Microsoft's new browser.

Hi AdamQK, in case you are an avast user, please try to disable https scanning in avast:

  1. Open the Avast dashboard on an affected system.
  2. Select settings in the left side menu.
  3. Adopt a Protection Active.
  4. Click on customize next to the Web Shield.
  5. Uncheck the option "Enable HTTPS analysis", and then click ok.

http://www.gHacks.NET/2014/10/31/avasts-HTTPS-scanning-interferes-with-Firefox-and-other-programs/

Tags: Firefox

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