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when trying to add a domain controller I get an installation error

Posted on 2013-02-02
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Last Modified: 2013-12-15
after installing the dc role and reboot I get the server is not yet functiong as a dc yet please run dcpromo. right before completing the dcpromo I get an error stating I need to run adprep since I am adding to an existing a dc to an existing forest. Included a screen shot of the error
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Question by:ID10Tz
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11 Comments
 
LVL 70

Expert Comment

by:KCTS
ID: 38847710
If you are trying to add a machine to the domain as a DC and it is running a later version of windows than your existing DCs, then as it says, you need to run adprep.

Take the CD/DVD from the new server, put it in one of the existing DCs - preferably the one holding the Schema Master role.

If the CD/DVD autoruns then cancel the operation. On the CD/DVD find the SOURCES folder, from there run

Adprep /forestprep

allow replication to happen then run

Adprep /domainprep


(if your current DC is 32bit use Adprep32 instead of Adprep)

Once this is done you can remove the CD/DVD and then go back to the new machine and run DCPromo again.
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Author Comment

by:ID10Tz
ID: 38847724
the pdc is 2003 std
the new server is 2008 r2 ent
error.png
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Author Comment

by:ID10Tz
ID: 38847729
also I find the adprep/adprep32 in the \support\adprep folder
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Author Comment

by:ID10Tz
ID: 38847736
so running the adprep32 now
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Author Comment

by:ID10Tz
ID: 38847775
no effect
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Author Comment

by:ID10Tz
ID: 38847796
what did work: raised domain function level on pdc from win 2k to win 03 then dcpromo on win08 r2 worked.
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Expert Comment

by:KCTS
ID: 38848394
The addprep process is essential if you are adding a new DC that has a schema version that post-dates the schema that is in place.
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Author Comment

by:ID10Tz
ID: 38849666
would running dcpromo from the existing win3k3 std pdc transfer all roles to the new win08 r2 ent pdc?
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LVL 26

Expert Comment

by:Leon Fester
ID: 38850948
FSMO roles don't move during a DCPROMO.
Only when you create a new dc in a new domain are FSMO roles added by the DCPROMO task.

When transfering roles from one DC to another, you need to initiate the move yourself through transfer/seizing the roles.
Using NTDSUTIL
http://support.microsoft.com/kb/255504

Or via the GUI:
This links contains both sets of instructions:
http://www.techrepublic.com/article/step-by-step-learn-how-to-transfer-and-seize-fsmo-roles-in-active-directory/5081138
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Accepted Solution

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ID10Tz earned 0 total points
ID: 38883025
just had to raise the functional level? how do I reward this?
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Author Closing Comment

by:ID10Tz
ID: 39719729
I resolved it
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