Microsoft KB Archive/149185

= "Registry Subkey Already Exists" When Reinstalling NWLINK =

Article ID: 149185

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows 3.1 Standard Edition
 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q149185



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



SYMPTOMS
When you attempt to reinstall the NWLINK protocol on a computer running Windows NT, one of the following error messages may be displayed:

The registry service subkey already exists.

The registry subkey already exists.



CAUSE
Windows NT is unable to reinstall the NWLINK protocol because key registry entries already exist in the registry.



RESOLUTION
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.

Remove all registry components for the NWLINK protocol and then restart the computer.

You must remove the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NwlnkIpx

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NwlnkNb

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NwlnkSpx

HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\NwlnkIpx

HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\NwlnkNb

HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\NwlnkSpx

NOTE: If the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinSock\Parameters\ Transports value exists, make sure that NwlnkIpx and NwlnkSpx strings are removed from that value declaration.

Additional query words: prodnt manual manually

Keywords: kbnetwork kbprb KB149185

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