DOCUMENT:Q260361 08-AUG-2001 [winnt] TITLE :TCP/IP Protocol Is Missing from Network Tool in Control Panel PRODUCT :Microsoft Windows NT PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbenv kbnetwork kbtool ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server version 4.0 - Microsoft Windows NT Workstation version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== You may not be able to add the TCP/IP protocol because the TCP/IP protocol is not listed in the Select Network Protocol dialog box in the Network tool in Control Panel. CAUSE ===== This behavior can occur if the Oemnxptc.inf file is missing from the %SystemRoot%\System32 folder, or if the Oemnxptc.inf registry key and values are missing under the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ncpa\InfOptions This issue can occur if you accidentally delete the Oemnxptc.inf file. If you delete the file, the registry key is also deleted automatically when you start the Network tool in Control Panel. RESOLUTION ========== Manually expand the Oemnxptc.in_ file from your original Windows NT CD-ROM to Oemnxptc.inf in the %SystemRoot%\System32 folder. If this does not resolve the problem, you may need to add both the Oemnxptc.inf file and the registry key manually. If that does not resolve the problem, you must reinstall Windows NT. Additional query words: ====================================================================== Keywords : kbenv kbnetwork kbtool Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT400search kbWinNTSsearch kbWinNTS400search kbWinNTS400 Version : winnt: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 2001.