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Unable to add Domain controller in existing Domain (Server 2008)? We have two sites connected through vpn. I have implemented domain model in one site and now I am trying to add domain controller in the existing domain. But I am getting error stating :

{ "The operation failed because: Active Directory Domain Services could not create the NTDS settings object for the active directory domain controller CN=NTDS settings,CN=IN-FMISC8D5P7V,CN=Servers,CN… on the remote AD DC WIN-25U8A45FTH6.RakHolding.ae. Ensure the provided network credentials have sufficient permissions.! "The RPC Server is Unavailable." }

I tried giving delegate permissions to the user on the system through local policies-user rights assignment-enable computer I dont remember the exact steps I did

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Is the account performing the dcpromo a domain admin or enterprise admin? Not sure why there would be a need to delegate permissions otherwise. –  Greg Askew Jan 5 '13 at 14:20
Does the VPN allow broadcast traffic? Is there a GRE tunnel? –  user152187 Jan 6 '13 at 1:20
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