Why does installing Windows 2000 Service Pack 1 (SP1) change the dynamic DNS functionality when I use Net Logon services?

A. If you've disabled the Register this connection's addresses in DNS option on the DNS tab of Advanced TCP/IP Properties, or set DisableDynamicUpdate, a REG_DWORD value, at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters to 1, the pre- and post-SP1 behavior is different. Before SP1, Win2K didn’t dynamically register A records and PTR records, but it did dynamically register SRV records. After SP1, Win2K doesn't dynamically register A records, PTR records, or SRV records.

If you want Win2K to function as it did before you installed SP1, perform the following steps:

  1. Use Regedt32 to navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters.
  2. From the Edit menu, select Add Value and type value name DnsUpdateOnAllAdapters as a REG_DWORD data type.
  3. Set the data value to 1.
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