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Windows 2000 Server with NT4 Server, problems with PDC

We have 3 NT Servers, we promoted 1 to PDC and then upgraded it to Windows 2000, everything at this point seemed to be working great (users and so on where all showing on W2000 and NT4 servers). Then, and this is the stupid bit, one of the 2 NT4 servers was promoted from BDC back to a PDC. So both NT machines now show the W2000 server as a BDC. This has caused a number of problems with sycronisation across the domain, we are having problems now getting DHCP to work correctly and RIS. Now here is the question.
How can we get our NT4 servers to think the W2000 server is the PDC, and both of them go back to being BDC's? if you promote the W2000 server from a NT machine you just get an error.

Thanks
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Led_Zep
Asked:
Led_Zep
1 Solution
 
svdammeCommented:
uh, in a migration the win2000 should be pdc and should stay pdc if i remember right
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Led_ZepAuthor Commented:
Yes you are correct, you upgrade the PDC first to Windows 2000, and that is what we did, but we have managed to re-promote a NT4 BDC back to a PDC, so now we have a Windows 2000 server fighting with a NT4 Server for PDC rights. Both thinking they are a PDC.
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ajpriceCommented:
One solution may very well be to upgrade the NT machine that thinks it's a PDC over to 2000 as well.

I've never heard of someone doing that before.  Didn't even think it was possible....
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SysExpertCommented:
Disconnect one of the PDC's. I would disconnect the Win2k machine, and at a later time do a proper upgrade.
Restore the win2k machine to an NT 4 Server as a BDC.

I hope tihs helps !
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Led_ZepAuthor Commented:
Thanks for the help.
I think I will give up on this one, the Windows 2000 Server machine only has Intranet & RIS images at the moment, so I am going to reinstall NT4 on it, promote it to PDC, and the upgrade back to Windows 2000 Server.

Thanks Again
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Led_ZepAuthor Commented:
I hoped to avoid a re-install, but I thought that I would have to, thanks SysExpert for confirming it.
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