We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. اگر به کمک نیاز دارید لطفاً یک سؤال بپرسید.

Firefox 8 not displaying addons, error code:sec_error_unknown_issuer

  • 3 پاسخ
  • 8 have this problem
  • 1 view
  • آخرین پاسخ توسّط cor-el

bmagan
bmagan
more options

I receive the following error message when opening the addons tool bar...

support.mozilla.com uses an invalid security certificate.

The certificate is not trusted because the issuer certificate is unknown.

(Error code: sec_error_unknown_issuer)

I receive the following error message when opening the addons tool bar... support.mozilla.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer)

All Replies (3)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.

bmagan
bmagan Question owner
more options

Thanks for the reply, but I checked and my date and time system settings are correct. Is there another reason why this would be happening. I have uninstalled/reinstalled firefox a number of times with no success.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Did you check the details of that certificate like the issuer and when it is valid by retrieving the certificate?

  • 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.

You can see more Details like intermediate certificates that are used in the Details pane.