Microsoft KB Archive/280439

= Net Logon Dynamic DNS Registration Functionality Changes After Installing Windows 2000 SP1 =

Article ID: 280439

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server

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This article was previously published under Q280439



IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry



SUMMARY
After you install Window 2000 Service Pack 1 (SP1), when you use the Net Logon service, the dynamic Domain Name System (DNS) registration functionality may not work as expected.



MORE INFORMATION
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

Dynamic DNS updates for the Net Logon service may not function as expected if you use one or both of the following settings:  The Register this connection's addresses in DNS option on the Advanced TCP/IP Settings tab has been disabled. The REG_DWORD value DisableDynamicUpdate in the following registry key is set to 0x1:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters



If you use the preceding settings, you may experience the following behavior when you initiate dynamic updates for the Net Logon service:
 * In Windows 2000, A and PTR release records are no longer dynamically registered. However, SRV release records are still registered.
 * In Windows 2000 SP1, A, PTR, or SRV release records are not dynamically registered.

This behavior is by design.

After you install the service pack, if you want Windows 2000 to function as it did before you installed the service pack, follow these steps:  Stop the Net Logon service. At a command prompt type net stop netlogon . Start Registry Editor (Regedit.exe). Locate and click the following registry key:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters

</li> Create a REG_DWORD value named DnsUpdateOnAllAdapters.</li> Click DnsUpdateOnAllAdapters.</li> On the Edit menu, click Modify, and then type 0x1 .</li> Start the NetLogon service. At a command prompt type net start netlogon .</li></ol>

For additional information about dynamic DNS registration, click the article number below to view the article in the Microsoft Knowledge Base:

246804 How to Enable/Disable Windows 2000 Dynamic DNS Registrations

Keywords: kbdns kbenv kbinfo KB280439

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