in case you were using the /console or -console switch on the Remote Desktop Connection (see RDC - Properties - Target) such as “%systemroot%\system32\mstsc.exe -console” … and it doesn’t work (it works fine for me for RDC from an XP machine but not from a Vista 64 machine) … what you want to do is use the “/admin” switch instead.
“%systemroot%\system32\mstsc.exe /admin”
It took forever to find this so I figured I’d post it here. I got the info from here: