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Firefox will not let me go on any website, because they are not secure.

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  • Последний ответ от cor-el

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Every website is saying that I am not allowed to enter because they are not secure. This has happened for every website as well as their own mozilla support website. I am able to 'add exemption' for some website but this is not available for all for example Netflix.co.uk.

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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 check if there is more detail available about the issuer of the certificate.

  • click the "Advanced" button show more detail
  • click the blue SEC_ERROR_UNKNOWN_ISSUER message to show the certificate chain
  • click "Copy text to clipboard" and paste the base64 certificate chain text in a reply

If clicking the SEC_ERROR_UNKNOWN_ISSUER text doesn't provide the certificate chain then try these steps to inspect the certificate.

  • open the Server tab in the Certificate Manager
    • Options/Preferences -> Privacy & Security
      Certificates: View Certificates -> Servers: "Add Exception"
  • paste the URL of the website (https://xxx.xxx) in it's Location field.

Let Firefox retrieve the certificate -> "Get Certificate"

  • click the "View" button and inspect the certificate

You can see detail like the issuer of the certificate and intermediate certificates in the Details tab.