Under some circumstances, it's necessary to update the server name used by the AD connector utility. For example, the Information Centric Analytics (ICA) AD connector logs show ICA is pulling AD data from a domain controller that is no longer in use; or you plan to migrate your AD domain controller to a new server.
Update the entry using SQL Server Management Studio (SSMS) by following this procedure:
INTO [NAME YOUR BACKUP]
SET ServerName = '[correct FQDN of DC]
WHERE ServerID = [ID of Incorrect DC entry]