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Server 2012 unable to promote to DC

Posted on 2014-08-11
Medium Priority
Last Modified: 2014-08-11
Hi all, i a have a 2012 R2 server on the domain, but when i try to promote to a DC it claims the functional level is at 2000. Yet when i check the DC's it shows the level at 2003. Any ideas how this can be resolved?

Question by:cwstad2
LVL 29

Expert Comment

ID: 40253860
you need to raise the forest level.
To raise the forest functional level

    Open Active Directory Domains and Trusts. To open Active Directory Domains and Trusts, click Start , click Administrative Tools , and then click Active Directory Domains and Trusts .

    In the console tree, right-click Active Directory Domains and Trusts , and then click Raise Forest Functional Level .

    In Select an available forest functional level , select the value and then click Raise .


Expert Comment

ID: 40253865
You may have an orphaned DC - http://support.microsoft.com/kb/555846/en-us

Also, did you run ADPREP/FORESTPREP. This has to be run before you can introduce a 2012 DC.
LVL 23

Accepted Solution

Stelian Stan earned 2000 total points
ID: 40253943
Did you checked both, domain and forest functional levels? To change it: http://kpytko.pl/2012/05/14/raising-forest-functional-level/
LVL 15

Author Closing Comment

ID: 40254010
Excellent thanks
LVL 29

Expert Comment

ID: 40254031
Was there some difference between my suggestion to raise the  FFL and Stelian's suggestion to do the same ?

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