Saturday 9 August 2014

How to: Rename a Domain Controller running Windows Server 2008R2

I stupidly forgot to rename a new Domain Controller before adding it to the domain. The NetDom tool can be used to change the name of a Domain Controller.

netdom computername OldDCName /add:NewDCNameFQDN
netdom computername OldDCName /makeprimary:NewDCNameFQDN

Restart the server at this point, and use the following command to remove the legacy SPN's.
netdom computername NewDCNameFQDN /remove:OldDCNameFQDN

You then need to update your important DNS records to match the new server name. Your domain will not function if you do not update the Service Location Records.