I am running two DC both running Windows 2003 32-bit. We recently bought a new server to replace the main domain controller. Of course the new server is Windows 2003 R2 x64. I moved over the the catelog & FSMO to the backup DC. I removed what was our primary Domain Controller from the Active Scheme & removed it physically from the network. I put the replacement server in its place and added it to the AD as the same name as the old server with the same IP address. My problem comes when trying to run DCPROMO on the windows 2003 R2 x64 server. I get the following error:
"The version of the Active Directory schema of the source forest is not compatible with the version of Active Directory on this computer."
From what I've read about the issue it seems that I need to run the adprep.exe from the Windows 2003 R2 x64 CD2 on the exsisting DC(Windows 2003 32-bit). It would appear the AD Scheme upgrades doesn't have as much to do with 32-bit vs. 64-bit, but with the fact that the new server is running Release 2. I ran this adprep on the current domain controller (windows 2003 32-bit) and it gives me the following error:
"The image file .....ADPREP.EXE is vaild, but is for a machine type other than the current machine."
If I try to run this same adprep on the DC I'm trying to promote I get an error telling me it needs to be a DC first.
Has anyone come across this issue before?