Promoting Windows Server 2008 R2 to DC in SBS2008

PurpleJelly
PurpleJelly used Ask the Experts™
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I am trying to join/promote a Windows Server 2008 R2 to a Windows 2008 SBS domain.  I am getting an error about updating the forest but when I run the adprep utility on the SBS box I get an error.

Can someone tell me if this is at all possible to make a Windows Server 2008 R2 server a DC in this environment?
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Senior Active Directory Engineer
Top Expert 2012
Commented:
You need to prepare forest/domain for R2

Run on SBS in command-line

adprep32 /forestprep
adprep32 /domainprep /gpprep

Your SBS is 32 bit edition but R2 is only 64bit so you need this command for appropriate edition :)

Regards,
Kryzsytof

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