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ADprep for 2008 server R2

I have a 2003 domain controller and now a new 2008 server. I'm trying to create a 2008 domain controller in my existing forest.  I know I have to run adprep.  However, it's not letting me run forest prep? If I run on 2008 server it tells me Can't run on this platform because it's no an AD domain controller.  If I try to run on 2003 it tells me it's not vaild on this machine?  How do I accomplish this? I have a 2008 r2 64 bit server and a 2003 32 bit server?
Windows Server 2008Windows Server 2003Active Directory

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8/22/2022 - Mon
Mike Kline

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I just found that... Also, adprep32 /domainprep or /domainprep /gpprep?
Mike Kline

yes run those, when you are done you will be at schema version 47




Thanks.  I forgot about the 32 prep.
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