You cannot run a TS RemoteApp application in Windows XP SP2

Consider the following scenario:

• You have an .rdp file that was created on a computer that is running Windows Server 2008 Service Pack 2 (SP2) and that has the Terminal Server role installed.
• You use this .rdp file to try to run a Windows Server 2008 Terminal Services RemoteApp (TS RemoteApp) application on a computer that is running Windows XP Service Pack 2 (SP2)

In this scenario, the TS RemoteApp may not run.

This problem occurs because Transport Layer Security (TLS) must be configured to use server authentication on both the terminal server and on the client that is running Windows XP SP2.

To resolve this problem, use one of the following methods:

• Enable TLS authentication on both the terminal server that is running Windows Server 2008 and on clients that are running Windows XP SP2.
• Click to clear the Require Server Authentication check box when you re-create the .rdp file.

This problem does not occur when the .rdp file is created on a computer that is running Windows Server 2008 Service Pack 1 (SP1) and that has the Terminal Server role installed. This problem does not occur because of a known problem that prevented the Require Server Authentication option from being enabled.

For more information about this known problem, click the following article number to view the article in the Microsoft Knowledge Base:

For more information about how to configure a TLS connection, click the following article number to view the article in the Microsoft Knowledge Base: For more information about how to configure Terminal Server settings, visit the following Microsoft TechNet Web site: