Alright, My domain is at all 2008 functional level, all my replications are fine. DNS settings are fine. I've promoted, demoted, migrated several domain controllers on this domain before all with no problems. All of a sudden when I try to promote this Server core server to be a domain controller I'm getting the network path cannot be found.

Here's what I've done.

my current main DC is 172.16.10.13
my current temporary DC is 172.16.10.99 and is holding all FSMO roles as I will be migrating both of these to x64 servers.

Install server core
rename
set IP settings
DNS are as follows
Index1 = 172.16.10.13
Index2 = 172.16.10.99
Index3 = 172.16.10.12 (it's own IP Address)

the other two domain controllers are holding the same DNS config in the TCP/IPv4 properties.

Join Server Core to domain, holding in a temporary OU where it can contact WSUS for updates.

Install DNS Server using:
start /w ocsetup DNS-Server (not 100% sure on that syntax, but I got it out of my MCITP 70-642 book)

ipconfig /flushdns
ipconfig /registerdns
check that an A record has been created in the domain (it's there)
I have the following answer file copied to the root of C: so I can promote it using: dcpromo.exe /answer:c:\answer.txt



as I said I'm getting the network path cannot be found error. This occurs after the binaries have been installed, and the environment is being checked.

Don't know what I'm missing, any suggestions would be greatly appreciated!

TIA