Error when running dcpromo on a Windows Server 2003 R2
February 6, 2009 by John Tran · Leave a Comment
When you try to dcpromo a server running Windows Server 2003 R2 and you receive the following error during the wizard.
“The Active Directory Installation Wizard cannot continue because the forest is not prepared for installing Windows Server 2003. Use the Adprep command-line tool to prepare both the forest and the domain. For more information about using the Adprep, see Active Directory Help.
The version of the Active Directory schema of the source forest is not compatible with the version of Active Directory on this computer.”
This issue may occur when Active Directory has not been updated with the Windows Server 2003 R2 schema extensions.
To resolve this issue, run the adprep.exe /forestprep command from the Windows Server 2003 R2 installation disk 2 on the schema master. To do this insert the Windows Server 2003 R2 Disk 2 and copy the ADPREP directory to the C:\ of your server. Then run C:\ADPREP\adprep /forestprep.
Follow the instructions to complete the upgarde
For more read http://support.microsoft.com/kb/917385
