1- We can use Group Policy setting to (enable or disable) Remote Desktop

• Click Start – All programs – Administrative Tools – Group Policy Management.
• Create or Edit Group Policy Objects.
• Expand Computer Configuration – Administrative Templates – Windows Components – Remote Desktop Services – Remote Desktop Session Host – Connections.
• Allow users to connect remotely using Remote Desktop Services (enable or disable)

2- We can use Group Policy Preferences to (enable or disable) Remote Desktop

• Click Start – All programs – Administrative Tools – Group Policy Management.
• Create or Edit Group Policy Objects
• Expand Computer Configuration – Preferences – Windows Settings.
• Right click Registry – New – Registry Item.
• General Tab.

• Action :Update
• Hive :HKEY_LOCAL_MACHINE
• Key path : SYSTEM\CurrentControlSet\Control\Terminal Server
• Value name : fDenyTSConnections
• Value type : REG_DWORD
• Value date : 00000000 enable OR 00000001 disable

 This article was originally posted at http://mabdelhamid.wordpress.com/2011/10/08/how-to-enable-or-disable-remote-desktop-via-group-policy-windows-2008/