I've recently been assigned the task of upgrading our x86 2003 domain controllers to x64 2008 domain controllers.
I currently have 4 x86 2003 DC's on my network.
what I have done so far was to install a x64 win2003 DC on the company network.
once replication has completed , I had removed the DC from the network and placed it in a lab for testing with no network connectivity.
I've seized all 5 FSMO roles , ran a FORESTPREP , DOMAINPREP AND GPPREP to prepare it for a 2008 inplace upgrade.
forestprep gave me a few errors regarding replication not completing after its last reboot , but I've managed to resolve that by that removing all site replication links under sites and services.
I popped in the 2008 CD and did the upgrade.
ADPREP logs came back with no errors after the upgrade but checked the event logs and it seems as if DNS will not start.
error stipulated below :
The DNS Server service terminated with the following error:
The network is not present or not started.
EVENT ID : 7023
Source : Service Control Manager Eventlog Provider
I have a few other errors from Directory services and file replication services but those are because of DNS lookup failures.
I understand that there would be network connectivity when I do the LIVE upgrade but I do not want to take any chance as I will be switching off one of my LIVE domain controllers for that implementation.
Any assistance would be appreciated.