Microsoft KB Archive/151740

= Network Client 3.0 Logon Fails On Token Ring =

Article ID: 151740

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Network Client 3.1

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This article was previously published under Q151740



SYMPTOMS
If the Network Client 3.0 for MS-DOS is configured to use NWLink (IPX) only on a token-ring network, user logons may not be validated by the Windows NT domain. When you attempt NET LOGON, the following message appears:

  You were logged on, but have not been validated by a server. Therefore, you may not have permission to use some network resources.

Other network functionality is not affected.



CAUSE
Windows NT 3.51 servers enable source routing by default. The network client does not. Without source routing, when the client requests logon validation, the server responds, but the client ignores the server response.



RESOLUTION
To enable source-routing on the client, add the following entry to the [MS$NWLINK] section of the protocol.ini file: Source_Routing=16. The section for an IBM 16/4 ISA token-ring network interface card (NIC) is:

[MS$NWLINK]

FRAME=TOKENRING

DriverName=nwlink$

BINDINGS=MS$IBMTR4

Source_Routing=16

Additional query words: source routing token ring nwlink logon

Keywords: KB151740

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