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!
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

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.


iainmacleodAuthor Commented:
Single DC, dcdiag reports all clean, AD-UAC shows level at 2003.
see below link and raise FFL ..I guess you have not already mentioned
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

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 );

There was an Interim 2003 FFL, not sure if that would cause this issue.
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?


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2012

From novice to tech pro — start learning today.