I am looking to promote a domain controller on 2008 in a different site to my domain. The only existing current DCs are in another site. The sites are connected by permanent VPN, and I know its working since I am able to log onto the domain properly from any computer at the remote site, as well as join the domain as a member server from the computer I am trying to promote. But if I am running DCPromo, then it will start the process but afterwards stop with the below error message:
The operation failed because:
Active Directory Domain Services could not create the NTDS Settings object for this Active Directory Domain Controller CN=NTDS Settings,CN=ES-SERVER2,CN=SERVERS,CN=ELEMENTARY,CN=SITES,CN=CONFIGURATION,DC=stghs,DC=net on the remote AD DC hs-server2.stghs.net. Ensure the provided network credentials have sufficient permissions.
"The RPC Server is unavailable."
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