Server 2008 R2 Remote Deskop Connection – Setup Steps
如果執行 Windows® XP 的用戶端電腦將使用此 RD 工作階段主機伺服器，請選取 [不需要網路層級驗證] 。 If client computers that are running Windows® XP will use this RD Session Host server, select Do not require Network Level Authentication . after reboot