TCP/IP Protocol Is Missing from Network Tool in Control Panel (260361)


The information in this article applies to:

  • Microsoft Windows NT Server 4.0
  • Microsoft Windows NT Workstation 4.0
This article was previously published under Q260361

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.
Modification Type:MajorLast Reviewed:8/8/2001
Keywords:kbenv kbnetwork kbprb KB260361
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