Neither will Firefox 41, but this can be disabled via a special feature in the about:config settings page
Mozilla has announced that, starting with Firefox 42, the installation of unsigned extensions will be not allowed anymore, due to security-related concerns.
Signed extensions are Firefox add-ons that have been checked and approved by Mozilla's automated extensions verification system, or by one of its human reviewers.
Full Article
Firefox 42 Will Not Allow the Installation of Unsigned Extensions
+52
+56Good timing - ? was just asking me about this as he was getting a warning message about the Webroot extensions.
Login to the community
No account yet? Create an account
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.