The fact that unsigned extensions worked on Ubuntu release (or any Linux release) was a bug. It was fixed here:
https://bugzilla.mozilla.org/show_bug.cgi?id=1712633 If you want to use unsigned extensions, you'll need to use developer edition, nightly, or ESR. ** Bug watch added: Mozilla Bugzilla #1712633 https://bugzilla.mozilla.org/show_bug.cgi?id=1712633 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1937343 Title: FireFox 90 unable to install unsigned webextensions Status in firefox package in Ubuntu: Confirmed Bug description: Ubuntu 18.04 FireFox 90.0+build1-0ubuntu0.18.04.1 Steps: - Set xpinstall.signatures.required to FALSE in about:config - Attempt to install UNSIGNED extension from file (Install Add-on From File...) in about:addons Expected: - FireFox warns about unverified add-on but ALLOWS installation. Actual result: - FireFox prevents the installation. Installing unsigned extensions used to work on all FireFox versions before 90. Related question https://answers.launchpad.net/ubuntu/+question/698053 There appears to be at least one other affected person https://old.reddit.com/r/firefox/comments/ootacl/unverified_addon_not_working_anymore_since/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1937343/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
