DOCUMENT:Q149185 11-JUN-2002 [winnt] TITLE :"Registry Subkey Already Exists" When Reinstalling NWLINK PRODUCT :Microsoft Windows NT PROD/VER::; winnt:3.5,3.51,4.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows 3.1 - Microsoft Windows NT Advanced Server - Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0 - Microsoft Windows NT Server versions 3.5, 3.51, 4.0 ------------------------------------------------------------------------------- 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: Q256986 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 Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTAdvSerSearch kbWinNTS351search kbWinNTS350search kbWin3xSearch kbZNotKeyword3 kbWin310 Version : :; winnt:3.5,3.51,4.0 Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.