Upgrading Active Directory Schema to Version 31 (To support Windows 2003 R2 Domain Controllers)

If you run adprep.exe /forestprep from the Windows 2003 R2 disk it will tell you that is has already been run (if you are running in a Windows 2003 domain.) To upgrade the Active Directory Schema to allow for the new options in R2 you need to run adprep.exe from the second disk for Windows 2003 R2. You can find adprep.exe in Drive:\CMPNENTS\R2\ADPREP\adprep.exe. Now all you need to do is run adprepe.exe /forestprep and you will get the additional options.