alt Hacker NewsYou must be using either the Developer Edition, ESR, nightly or some unbranded version. Vanilla Firefox doesn’t allow to install unsigned extensions permanently.
You must be using either the Developer Edition, ESR, nightly or some unbranded version. Vanilla Firefox doesn’t allow to install unsigned extensions permanently.
As of recentlyish, I noticed this is not an option on ESR, either. Only Nightly and Dev.
https://wiki.mozilla.org/Add-ons/Extension_Signing#FAQ
The FAQ says that in ESR, xpinstall.signatures.required should be respected but this is out of date IME (ESR 115).