DCPromo problem - 'The RPC server is unavailable' 1

[grazer10]

Hello all,

Existing DC server : Win2003 Enterprise
Proposed additional DC server : Win2003 R2 Standard

I have successfully prepared the existing Win2003 DC with the R2 Forestprep and Domainprep routines.

When I run the DCpromo, it fails when attempting to create the NTDS Settings object for the new domain controller on the existing remote domain controller.

The onscreen prompt finishes with the message 'The RPC Server is unavailable'

An excerpt from the dcpromo.log is :

03/12 08:28:29 [INFO] Creating the NTDS Settings object for this domain controller on the remote domain controller primary.PENDOM1.bsp.com…
03/12 08:29:11 [INFO] Error - Active Directory could not create the NTDS Settings object for this domain controller CN=NTDS Settings,CN=<NewDCServer>,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=<Domain>,DC=<Company>,DC=com on the remote domain controller <ExistingDC>.<Domain>.<Company>.com. Ensure the provided network credentials have sufficient permissions. (1722)
03/12 08:29:12 [INFO] NtdsInstall for <Domain>.<Company>.com returned 1722
03/12 08:29:12 [INFO] DsRolepInstallDs returned 1722
03/12 08:29:12 [ERROR] Failed to install to Directory Service (1722)


RPC service is running on both the existing DC and the new server.

DNS on the new server points to the existing DC.

Can anyone advise on how to resolve or troubleshoot this issue?

 

[TechyMcSe2k]

Make sure your Windows firewall is off and you are doing this under a Enterprise Admin login

________________________________________
Achieving a perception of high intelligence level can only be limited by your manipulation skills of the Google algorithm!

 

[grazer10]

Thank you Techy - firewall is off and domain account used is member of 'Enterprise Admins'.

 

[TechyMcSe2k]

run a dcdiag and see if there are any errors.

also check out

http://support.microsoft.com/kb/839880

________________________________________
Achieving a perception of high intelligence level can only be limited by your manipulation skills of the Google algorithm!

 

[itsp1965]

Is the new DC on the same network as the one you are trying to replicate to? Still sounds like a firewall issue to me. Otherwise there could be an issue with your existing DC (memory leak, process error, etc) which can cause RPC service failures

 

[grazer10]

Thanks all - but gold star to you in this instance Techy....

When I run the DCDIAG I found that we had a DNS issue with the existing DC. Back in the past, the server had two NICs enabled. Although only one is now enabled, there was still an entry for the second IP showing in DNS.

Looks like some lookups for the server name would get a successful hit against the active IP - but when I run the DCDIAG it was trying to locate the server at the old (disabled) IP address.

Removed the old IP entry from DNS, properly disabled the NIC on the DC and retried the DCPROMO - worked first time.

Cheers mate!