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error migrating windows 2003 domain

Hi,

I have been migrating a domain controler from a windows 2003 server sp1 to a windows server 2003r2 sp2, when i try to execute dcpromo on my windows 2003r2 server it stops due an replicating error, it says that it can´t replicate because the forest isn´t prepared to install windows 2003, i have verified that adprep /forestprep and adprep/domainprep has been executed executing them again. I have seen nothing in the event viewer.
My domain functional level is windows 2000 mixed and the forest functional level is windows 2000 and it has a windows 2003 server working now as domain  controller.
Could anyone help me?.
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Camel0t
Asked:
Camel0t
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2 Solutions
 
Camel0tAuthor Commented:
I´ve found that i need a different version of adprep other than the one that i´ve got in my cd.

http://support.microsoft.com/kb/917385/en-us

ADPrep.exe tool for Windows Server 2003 R2 is 5.2.3790.2075.
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Mike KlineCommented:
So what you need in this case is adprep from disk 2 of the 2003 R2 disk.

You can also check your schema.  When you are done you will be at 31 for 2003 R2

http://adisfun.blogspot.com/2012/09/windows-2012-ad-schema-version.html

On another note, have you thought about going to 2008 R2 at this point?

Thanks

Mike
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Camel0tAuthor Commented:
At this moment we are planning to remove the oldest server and migrate all the functions to the newest server.
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Camel0tAuthor Commented:
As the link shows the problem is the version of adprep, who is in the second installagtion cd of windows 2003r2
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