Existing unique server : Windows 2000 Sp4 with Exchange 2000 Sp3 I want to add a new Windows 2003 Server. First I did adprep /forestprep and adprep /domainprep to the Windows 2000 Server. All errors as been solved and adprep return a message that the forest/domain is ok. The new 2003 Server is a member server. When i dcpromo, adding a domain controler to an existing domain. I have an error that said: the forest in not prepared, use adprep. What is wrong? Can I leave all master roles to the existing Windows 2000 Server with Exchange? I just want to add the new 2003 Server form Files Sharing and Netlogon Purpuse. Idosn't want to upgrade my Windows 2000 Server to Windows 2003, only the AD. Patrick H.

Please provide the exact error you are seeing as well as any errors in the Application/System logs.