Unable to contact all domain controllers
Windows Small Business Server 2003 Setup cannot continue because one or more domain controllers listed in Active Directory could not be found on the network.
To continue Setup, all domain controllers must be contacted. Ensure that all domain controllers are turned on and connected to the network, and then click Check Again to refresh the list of Setup requirements.
|If you have removed a domain controller from the domain, ensure that the domain controller account has been deleted from Active Directory.|
Click Start, click Run, and then type Dsa.msc.
In the console tree, double-click the domain, and then click Domain Controllers.
In the details pane, right-click the computer name of the domain controller that was removed, and then click Delete.