Disable adding channels
User Configuration\Administrative Templates\Windows Components\Internet Explorer\Offline Pages
Prevents users from adding channels to Internet Explorer.
Channels are Web sites that are updated automatically on your computer according to a schedule specified by the channel provider.
If you enable this policy, the Add Active Channel button, which appears on a channel that users haven't yet subscribed to, will be disabled. Users also cannot add content that is based on a channel, such as some of the Active Desktop items from the Microsoft Active Desktop Gallery, to their desktop.
If you disable this policy or do not configure it, users can add channels to the Channel bar or to their desktop.
Most channel providers use the words Add Active Channel for this option; however, a few use different words, such as Subscribe .