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[Archive] How do I get Win NT to grab a new IP address after a shutdown?



Article ID: KB6899 KB Last Updated: 27 Aug 2010Version: 3.0
How do I get Win NT to grab a new IP address after a shutdown?
Windows 95
Windows NT
After reboot, the PC does not grab a new IP address



This is a know issue that Microsoft knows about.

From the Microsoft web site,

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
Value data: 0x00000001 (1)

Key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Shutdown
Value name: FastReboot
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.

Here is the problem or goal:

  • After reboot, the PC does not grab a new IP address
  • How do I get Win NT to grab a new IP address after a shutdown?
  • How do I get Win 95 to grab a new IP address after a shutdown?

Problem Environment:

  • Windows 95
  • Windows NT

Applicable Products:

  • None

Applicable ScreenOS:

  • N/A

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