Some Firefox users started to notice that installed browser extensions were all disabled in the web browser suddenly. Extensions would display "could not be verified for use in Firefox and has been disabled" messages in the add-ons manager of the browser. Firefox would display "One or more installed add-ons cannot be verified and have been disabled" at the top as a notification next to that.
Affected extensions include LastPass, Ghostery, Download Manager (S3), Dark Mode, Honey, uBlock Origin, Greasemonkey, NoScript, and others.
Only options provided were to find a replacement and to remove the extension in question; this left affected users puzzled. Was this some kind of preemptive strike against policy violation extensions? Mozilla did announce that it would enforce policies more strictly.
The answer is no. Turns out, the issue is caused by a bug. If you read carefully, you notice that verification is the issue. A new thread on Bugzilla suggests that this has something to do with extension signing.
Firefox marked addons due signing as unsupported, but doesn't allow re-downloads from AMO → All extensions disabled due to expiration of intermediate signing cert.
All Firefox extensions need to be signed since Firefox 48 and Firefox ESR 52. Firefox will block the installation of extensions with invalid certificates (or none), and that is causing the issue on user systems.
Related issues have been reported: some users cannot install extensions from Mozilla's official Add-ons repository. Users get "Download failed. Please check your connection" errors when they attempt to download any extension from the official repository.
Solution
Nightly, Dev and Android users may be able to disable signing of extensions; some users reported that this resolved the issue temporarily on their end. You need to set the preference xpinstall.signatures.required to false on about:config to disable signing. You could change the system date to the previous day to resolve it temporarily as well, but that can lead to other issues.
The issue can only be resolved on Mozilla's end. The organization needs to renew the certificate or create a new one to resolve the issue. I'd expect Mozilla to do that soon as the issue is widespread and affecting lots of Firefox users.
Users should not remove affected extensions from their installations; the issue will resolve itself once Mozilla fixes it.
Summary
Article Name
Your Firefox extensions are all disabled? That's a bug!
Description
Some Firefox users started to notice that installed browser extensions were all disabled in the web browser suddenly.
Author
Martin Brinkmann
Publisher
Ghacks Technology News
Logo
https://www.ghacks.net/2019/05/04/your-firefox-extensions-are-all-disabled-thats-a-bug/
2019-05-04 05:03:44Z
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