If the TCP/IP protocol is not listed in the
Select Network Protocol dialog in the
Network tool of
Control Panel, then
%SystemRoot%\System32\Oemnxptc.inf is missing
or the
Oemnxptc.inf registry key and values are missing from
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ncpa\InfOptions.
NOTE: If you delete the %SystemRoot%\System32\Oemnxptc.inf file, the registry key is automatically deleted when you start Control Panel / Network.
To resolve the problem:
Expand <CD-ROM:>\I386\Oemnxptc.in_ %SystemRoot%\System32\Oemnxptc.inf
If this does not correct the problem, do the expand again and import the following:
REGEDIT4 \[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ncpa\InfOptions\oemnxptc.inf\] "DateLow"=dword:47d9dc00 \[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ncpa\InfOptions\oemnxptc.inf\NetTransport.PCI\] "OptionList"=hex(7):54,43,00,00 "OptionTextList"=hex(7):54,43,50,2f,49,50,20,50,72,6f,74,6f,63,6f,6c,00,00If the above fails to correct the problem, do the import again and perform an update install of Windows NT 4.0, followed by re-application of your latest service pack.
If all the above fail to work, you must do a clean new install.