URGENT: Error while running DCpromo

C

chetan

Hi All

I have only one DC in my domain, & trying to setup another
DC. when I run DCPROMO, get following error,

The Operation failed because;

The directory service failed to create the server object
for CN=NTDS Settings,CN=servername.... DC=com on server.
Please ensure the network credentials provided have
sufficient access to add erplica.

"A Service Principal Name(SPN) could not be constructed
because the provided hostname is not in necessary format"

I am using Admin account for running DCPROMO & it has the
rights of adding replica. (in the domain properties)

I also keep on getting SPN errors on my DC (Event ID: 1411
& 1655)

Can anyone help pleeeeease!

Thanks.
 
J

Jim Singh

Well iam assuming that your are creating a child domain by
clicking/selecting the right options in DCPromo wizard, beause it gives you
three options initially i.e. create child domain, create delegated domain,
and create a different tree. So, make sure you have selected the one that
gives u the option to create a new child domain in an existing domain. There
are couple other things you should check:

A: make sure the "preffered dns" on the servers "IP" NIC properties is set
as the root dc IP. After the dcpromo is done and you have created a new
child domain you can change this setting to point to itself.

B. Before you do the dcpromo on the new server, make sure the replicatoin
between root domain and all other child domains have been done successfully.
You can use the replmon.exe tool to do a manual force replication of all the
directory parititions. It is very important that you have all the existing
DC replicating and up to date before you create another child domain. You
can find replmon in the win 2003 resorce kit.

C. Check you can you dont have any firewall setup between the main root
domain that is blocking any incoming traffic. You atleast need ports 3389,
25, 53 open for communication.

- Jim
 

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