This policy setting allows you to specify whether remote users can start any program on the RD Session Host server when they start a Remote Desktop Services session or whether they can only start programs that are listed in the RemoteApp programs list.You can control which programs on an RD Session Host server can be started remotely by using the RemoteApp Manager on Windows Server 2008 R2 and Windows Server 2008. If you are using Windows Server 2012 R2 you can configure this in the Collection properties sheet by using Server Manager.By default only programs in the RemoteApp Programs list can be started when a user starts a Remote Desktop Services session.If you enable this policy setting remote users can start any program on the RD Session Host server when they start a Remote Desktop Services session. For example a remote user can do this by specifying the program's executable path at connection time by using the Remote Desktop Connection client.If you disable or do not configure this policy setting remote users can only start programs that are listed in the RemoteApp programs list when they start a Remote Desktop Services session.