
You can’t simply paste the extension ID into the settings like you can with Chrome/Edge you have to paste a perfectly formatted json code into the policy settings. However, configuring the ability to block all extensions (except for approved extensions) is a lot more difficult. Download the ADMX & ADML files, add to the PolicyDefinitions folder on your domain controller, create a GPO, and apply it to a target computer. If you’ve configured Chrome Enterprise or Edge Enterprise in a corporate environment, then the procedure is pretty similar.

This will allow you to set corporate browser policies for all Firefox Enterprise browser users, such as allowing, blocking, or whitelisting certain extensions. In this guide, I’m going to show you how to create a Firefox browser Group Policy (GPO) in Active Directory.
