This policy setting allows you to manage whether users have the ability to allow or deny add-ons through Add-On Manager.
If you enable this policy setting, users cannot enable or disable add-ons through Add-On Manager. The only exception occurs if an add-on has been specifically entered into the 'Add-On List' policy setting in such a way as to allow users to continue to manage the add-on. In this case, the user can still manage the add-on through the Add-On Manager.
If you disable or do not configure this policy setting, the appropriate controls in the Add-On Manager will be available to the user.
|Registry Path||Software\Policies\Microsoft\Internet Explorer\Restrictions|