javascriptfirefoxfirefox-addonsigningadd-on

How can I disable signature checking for Firefox add-ons?

Since version 42, Firefox, by default, refuses to install unsigned add-ons. How do I disable this verification?

Solution

  • It is only possible to disable add-on verification in Nightly, Developer, and Enterprise channels. In other words it is no longer possible in the standard (release) or beta channels.

    To disable it in one of the compatible versions:

    1. Go to about:config (enter it into address bar)
    2. Set xpinstall.signatures.required to false.

    More at https://wiki.mozilla.org/Addons/Extension_Signing