Originally posted by the TS Team Blog.

Excerpt:

“In Windows Server 2003, you can start the RDC client (mstsc.exe) with the /console switch to remotely connect to the physical console session on the server (also known as session 0). In Windows Server 2008, the /console switch has been deprecated. (For more information, see the “Why the /console switch is no longer needed” section of this article.) In Windows Server 2008, session 0 is a non-interactive session that is reserved for services.

You can use the new /admin switch to remotely connect to a Windows Server 2008-based server for administrative purposes. The /admin switch is introduced with RDC 6.1. RDC 6.1 is included with the following operating systems:

• Windows Server 2008
• Windows Vista Service Pack 1 (SP1) Beta and RC
• Windows XP Service Pack 3 (SP3) Beta and RC

Note RDC 6.1 (6.0.6001) supports Remote Desktop Protocol (RDP) 6.1.

RDC 6.1 does not support the /console switch. However, for backward compatibility, you can use the /admin switch to connect to the physical console session on a Windows Server 2003-based server. For example, to connect from a Windows Vista SP1 RC-based client to the physical console session of a Windows Server 2003-based server, you can run the command mstsc.exe /admin.”

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Starting with the RC0 release of Windows Server 2008, Terminal Services Web Access (TS Web Access) requires the most recent update to the Remote Desktop Connection (RDC) client software. This updated version is available in the beta versions of Windows Vista Service Pack 1 (SP1) and Windows XP Service Pack 3 (SP3).

If you are taking part in a Microsoft Connect Beta program, you can download the beta versions of Windows Vista SP1 or Windows XP SP3 from the program Web page.

If you are not an administrator, and you are using TS Web Access at your workplace, contact your system administrator to determine whether your workplace is participating in a Microsoft Beta program. If it is a participant, your system administrator can help you to obtain the updated RDC client software.

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