DOCUMENT:Q151237 11-JUN-2002 [winnt] TITLE :Error Message When Installing TCP/IP or Adding TCP/IP Service PRODUCT :Microsoft Windows NT PROD/VER::3.5,3.51,4.0 OPER/SYS: KEYWORDS:kbnetworkkbfaq ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - 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 TCP/IP or add a TCP/IP service, you may receive one or more of the following error messages: - Registry service subkey already exists -or- - Unable to remove name space provider RESOLUTION ========== To resolve this problem, make sure that all of the components of a given TCP/IP Service are properly removed, and then make sure that the following registry subkeys are also removed before you restart the computer: IMPORTANT: If you have Windows NT 4.0 with Service Pack 2, see the following article in the Microsoft Knowledge Base before removing any registry keys: Q162837Replacing TCPIP after SP2 causes STOP 0x00000050 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. NOTE: You may or may not have all of the following Registry entries depending on your TCP/IP configuration. NOTE: CCS=CurrentControlSet HKEY_LOCAL_MACHINE\Software\Microsoft\DhcpMibAgent HKEY_LOCAL_MACHINE\Software\Microsoft\DhcpServer HKEY_LOCAL_MACHINE\Software\Microsoft\FTPSVC HKEY_LOCAL_MACHINE\Software\Microsoft\LPDSVC HKEY_LOCAL_MACHINE\Software\Microsoft\NetBT HKEY_LOCAL_MACHINE\Software\Microsoft\RFC1156Agent HKEY_LOCAL_MACHINE\Software\Microsoft\SNMP HKEY_LOCAL_MACHINE\Software\Microsoft\SimpTcp HKEY_LOCAL_MACHINE\Software\Microsoft\Tcpip HKEY_LOCAL_MACHINE\Software\Microsoft\TcpipCU HKEY_LOCAL_MACHINE\Software\Microsoft\TcpPrint HKEY_LOCAL_MACHINE\Software\Microsoft\Wins HKEY_LOCAL_MACHINE\Software\Microsoft\WinsMibAgent HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\DHCP HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\DhcpServer HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\FTPSVC HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\Lmhosts HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\LPDSVC HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\NetBT HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\SimpTcp HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\SNMP HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\Tcpip HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\Wins HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\WinSock HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\WinSock2 HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\\Parameters\Tcpip where is the name of network card installed on system and where is the number of the network adapter. It may also be necessary to remove the following keys: HKEY_LOCAL_MACHINE\System\CCS\Enum\Root\Legacy_DHCP HKEY_LOCAL_MACHINE\System\CCS\Enum\Root\Legacy_Lmhosts HKEY_LOCAL_MACHINE\System\CCS\Enum\Root\Legacy_LPDSVC HKEY_LOCAL_MACHINE\System\CCS\Enum\Root\Legacy_NetBT HKEY_LOCAL_MACHINE\System\CCS\Enum\Root\Legacy_TCPIP HKEY_LOCAL_MACHINE\System\CCS\Services\LanManServer\Linkage\Bind HKEY_LOCAL_MACHINE\System\CCS\Services\LanManWorkstation\Linkage\Bind HKEY_LOCAL_MACHINE\SYSTEM\CCS\Services\PPTP NOTE: Removing these additional keys requires manipulation of the rights on those keys. The default rights for Everyone is Read. This needs to be done for each key you wish to remove. To change the rights, log on as Administrator, run Regedt32.exe, and select the key you want to delete. From the menu, select Security, Owner, Take ownership. Then, Select Security, Permissions, and give full control to Everyone, selecting "Replace permission on existing subkeys." Restart the computer so that registry changes are recognized by Windows NT. If Remote Access Service (RAS) is installed, you may also need to manually delete the following RAS and NDISWANx registry entries: 1. Locate HKEY_LOCAL_MACHINE\System\CCS\Services\NetBIOS\Linkage. 2. Double-click Bind, and remove all NetBT_xxxx entries, such as: \Device\NetBT_El59x1 \Device\NetBT_NdisWan1 \Device\NetBT_NdisWan2 \Device\NetBT_NdisWan3 \Device\NetBT_NdisWan4 HKEY_LOCAL_MACHINE\System\CCS\Services\RASARP HKEY_LOCAL_MACHINE\System\CCS\Services\RASAUTO HKEY_LOCAL_MACHINE\System\CCS\Services\RASMAN HKEY_LOCAL_MACHINE\System\CCS\Services\RASACD HKEY_LOCAL_MACHINE\System\CCS\Services\RASPPTPE HKEY_LOCAL_MACHINE\System\CCS\Services\RASPPTPF HKEY_LOCAL_MACHINE\System\CCS\Services\RASPPTPM HKEY_LOCAL_MACHINE\System\CCS\Services\NDISWANx\Parameters\TCPIP (where x reflects the numbers corresponding to the preceding \Device\NetBT_NDISWANx. HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASARP HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASACD HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASAUTO HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASMAN HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASPPTPE HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASPPTPF HKEY_LOCAL_MACHINE\System\CCS\ENUM\Root\Legacy_RASPPTPM Additional query words: remove manual manually regedt32 how to howto removing tcpip ====================================================================== Keywords : kbnetwork kbfaq Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search Version : :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. 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