Why aren’t my add-ons working on some websites?

Revision Information
  • Revision id: 261109
  • Created:
  • Creator: William Durand
  • Comment: The sys add-on will only be shipped to FF 113 and 114.
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Fabi.L
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: Yes
  • Readied for localization:
  • Readied for localization by: Fabi.L
Revision Source
Revision Content

Certain Firefox users may come across a desktop notification indicating that their add-ons have been disabled for particular websites. In Firefox versions 113 and 114 we have introduced a system add-on developed by Mozilla that disables extensions on specific websites for various reasons, including security concerns.

Our team is working continuously to develop this functionality and to provide users the ability to manage these restrictions for each individual add-on in the future.

How can I re-enable the add-ons that have been disabled?

We understand that installing add-ons is a user choice and, as with your security, we also take this matter very seriously. If you are aware of the associated risk and still wish to re-enable the add-ons that have been disabled for a website, you can do it from the configuration editor:

Warning: Changing advanced preferences in the configuration editor can affect Firefox's stability and security. This is recommended for advanced users only.
  1. Type about:config in the address bar and press Enter.
  2. A warning page may appear. Click Accept the Risk and Continue to go to the about:config page.
  3. Type extensions.webextensions.addons-restricted-domains@mozilla.com.disable
  4. In the type of pref section, select Boolean.
  5. Click the + sign next to the pref to create it.
  6. Set the pref to True.
  7. Restart Firefox.