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Register DNS records in a Single-Label Domain
John Savill
August 2, 2007
1 Min Read
Q. How can I force network clients to register DNS records in a single-label domain?
A. Normally, Windows XP and Windows 2000 (SP4 or later) clients won't register DNS records in a single-label DNS domain; however, you can enable this functionality by making the following registry change:
Start the registry editor (regedit.exe)
Move to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesDnsCacheParameters for Windows 2000/XP or HKEY_LOCAL_MACHINESoftwarePoliciesMicrosoftWindows NTDNSClient for Windows Server 2003/Vista
From the Edit menu select New - DWORD value
Enter a name of UpdateTopLevelDomainZones and press Enter
Double click the new value and set to 1. Click OK
Restart the computer
Make the change on all computers, including domain controllers (DCs) in the forest. You can make this change via Group Policy on XP and later computers by enabling the Update Top Level Domain Zones policy under the Computer ConfigurationAdministrative TemplatesNetworkDNS Client.
—John Savill
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