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All of my themes and add-ons suddenly became non-supported (in a matter of milliseconds), how do I fix this?

  • 7 replies
  • 9 have this problem
  • 21 views
  • Last reply by ayhan.deniz

ayhan.deniz
ayhan.deniz
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I was just casually browsing the internet, looking at a well-known website, when suddenly, something happened to my theme (felt like it crashed, I do not know the exact vocabulary), then I got a message. I cannot remember what the message actually said, but there was a button which redirected me to my Add-ons Manager. I clicked on it, and I could not see any of my add-ons. Then, I clicked on the prompt that said "Missing something? Some extensions are no longer supported by Firefox. Show legacy extensions." So, I clicked on the "Show legacy extensions" button, and I saw all of my themes and most of my add-ons jumbled up in an "unsupported" category. Can anyone help?

Oh, and this was happening while I was surfing the internet, not after I updated Firefox.

Thanks, Deniz

I was just casually browsing the internet, looking at a well-known website, when suddenly, something happened to my theme (felt like it crashed, I do not know the exact vocabulary), then I got a message. I cannot remember what the message actually said, but there was a button which redirected me to my Add-ons Manager. I clicked on it, and I could not see any of my add-ons. Then, I clicked on the prompt that said "Missing something? Some extensions are no longer supported by Firefox. Show legacy extensions." So, I clicked on the "Show legacy extensions" button, and I saw all of my themes and most of my add-ons jumbled up in an "unsupported" category. Can anyone help? Oh, and this was happening while I was surfing the internet, not after I updated Firefox. Thanks, Deniz

Chosen solution

UPDATE: Firefox 66.0.4 and 60.6.2esr are now available with the new certificate needed to solve this problem. See: Update Firefox to the latest release.

Hi Tedd, there is a general problem with most add-ons at the moment. A critical certificate Firefox uses to verify their digital signatures has expired, and you need a new one to resume using the extensions.

Please see this article for more information: Add-ons disabled or fail to install on Firefox.

Also, Firefox 66.0.4 is expected later today with a fix if the interim hotfix hasn't come through.

Read this answer in context 👍 1

All Replies (7)

ayhan.deniz
ayhan.deniz Question owner
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Here are the screenshots as a comment, because for some reason, they did not send with my question.

Dave-H
Dave-H
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Same here, all but three of my add-ons are now disabled, including AdBlock Plus!

Modified by Dave-H

James
James
  • Top 25 Contributor
  • Moderator
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The Add-ons team is working on a fix for this. It looks like a certificate used to sign many popular extensions expired. The verification process checks that certificate, and anything that doesn't pass is blocked.

I don't know how soon re-signed versions of those extensions will become available, or whether another workaround will be discovered. We are all hoping to learn more soon.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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See also:

  • Bug 1548973 - (armagadd-on-2.0) All extensions disabled due to expiration of intermediate signing cert

(please do not comment in bug reports
https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

Tedd
Tedd
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Happened to me too. This includes my Norton add-ons. I will be reluctantly be forced to go to MS Edge to keep my Norton add-ons. Someone messed up big-time.

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
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Chosen Solution

UPDATE: Firefox 66.0.4 and 60.6.2esr are now available with the new certificate needed to solve this problem. See: Update Firefox to the latest release.

Hi Tedd, there is a general problem with most add-ons at the moment. A critical certificate Firefox uses to verify their digital signatures has expired, and you need a new one to resume using the extensions.

Please see this article for more information: Add-ons disabled or fail to install on Firefox.

Also, Firefox 66.0.4 is expected later today with a fix if the interim hotfix hasn't come through.

Modified by jscher2000 - Support Volunteer

ayhan.deniz
ayhan.deniz Question owner
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Thanks to everyone that replied. I'll be marking this as solved because the question has been answered, thanks to everyone!