The Domain controller was not validated

when i click on 'connect to Domain Controller' an error message appears saying 'The Domain controller was not validated because: The RPC server is unavailable.

檢查另一台SERVER DNS　有無裝

Windows 2003 無法 退出 Domain

當 windows server 2003 想退出任何 domain 時候. 執行 dcpromo 後會收到 "RPC Server is Unavailable"

將 windows 2003 內置 firewall 先關閉就無問題

Windows 2003 無法 Join 2000 Domain

先將2003 R2第二隻碟內 D:\CMPNENTS\R2\ADPREP folder 抄到 windows 2000 server.
再執行 adprep /forestprep
再執行 adprep /domainprep
再執行 adprep /domainprep gpprep

之後應該可以將 2003 join 2000