Joining Server 2012 Standard to Server 2003 Domain

I've got a Server2003STD machine which is on its way out. I've build a new server to replace it and take over AD duties from it, running server 2012 Standard.

I followed the deployment guide, upgraded the Domain and Forrest to server 2003 levels (was previous set to server 2000 function level), however when trying to run the ADDS config wizard on the 2012 server, it tells me that:

Verification of the replica failed, The forest functional level is Windows 2000

Any help would be much appreciated!
iainmacleodAsked:
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Mike KlineCommented:
Is this is a single DC or do you currently have multiple DCs?

First I'd verify the functional levels again and then verify the health/replication of your current domain/forest.  Tools like dcidag/repadmin/event logs can help with that.

Thanks

Mike
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iainmacleodAuthor Commented:
Single DC, dcdiag reports all clean, AD-UAC shows level at 2003.
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Life1430Commented:
see below link and raise FFL ..I guess you have not already mentioned

http://codeidol.com/community/ad/raising-the-functional-level-of-a-windows-server-2/1937/
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Rob StoneCommented:
Can you confirm the level in ldp.exe?  Connect to server, you should see something like this on the initial page:
domainControllerFunctionality: 2 = ( WIN2003 );
domainFunctionality: 2 = ( WIN2003 );
forestFunctionality: 2 = ( WIN2003 );
http://support.microsoft.com/kb/322692

There was an Interim 2003 FFL, not sure if that would cause this issue.
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Philip ElderTechnical Architect - HA/Compute/StorageCommented:
Off chance I realize, but is the Server 2003 up to date with the latest service pack?

Restart the FRS service and NETLOGON service. Any errors show up in the logs?

Philip
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Windows Server 2012

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