This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

add-ons/extensions suddenly stopped working.

  • 1 jibu
  • 1 ana tatizo hili
  • 3 views
  • Last reply by cor-el

more options

Add-ons such as AdBlock Plus have suddenly been disabled with no way to re-enable them. I have tried re-installing firefox. Now my add-ons are gone and when I try to install them from firefox's own website, it tells me "Download failed. Please check your connection." My connection is clearly fine since I'm able to be on this page. What is going on?

Add-ons such as AdBlock Plus have suddenly been disabled with no way to re-enable them. I have tried re-installing firefox. Now my add-ons are gone and when I try to install them from firefox's own website, it tells me "Download failed. Please check your connection." My connection is clearly fine since I'm able to be on this page. What is going on?

All Replies (1)

more options

There is a problem with the certificate that is used to sign some extensions. This is being worked by the Add-ons team.

See:

At about 6:10 PST we received a report that a certificate issue for Firefox is causing add-ons to stop working and add-on installs to fail.
Our team is actively working on a fix. We will update as soon as we have more information.