How to cause Windows 98 to release DHCP lease information at shutdown (217035)


The information in this article applies to:

  • Microsoft Windows 98
This article was previously published under Q217035
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

You can configure Windows 98 to automatically release all Dynamic Host Configuration Protocol (DHCP) lease information at shutdown by modifying the registry.

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.

Add the following registry items to cause Windows 98 to automatically release all DHCP lease information at shutdown:

Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\DHCP
Value name: ReleaseLeaseOnShutdown
Type: DWORD
Value data: 0x00000001 (1)

Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Shutdown
Value name: FastReboot
Type: STRING
Value data: 0

NOTE: The first value (ReleaseLeaseOnShutdown) is not present by default and must be added. The second value (FastReboot) is set to 1 by default.

The fast shutdown feature must be disabled for this method to work correctly. If it is not disabled, Windows 98 cannot process the command to release the DHCP information before shutting down.

When Windows 98 obtains TCP/IP configuration information from a DHCP server, it creates registry entries to store that information. If there is a problem contacting the DHCP server the next time the computer is started, the necessary TCP/IP configuration information is already stored. However, this may not be the optimal behavior in some network environments.
Modification Type:MinorLast Reviewed:12/20/2004
Keywords:kbenv kbhowto kbnetwork KB217035
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