Microsoft KB Archive/138854

= Connecting Using NBT.SYS Causes Windows NT Session to Hang =

Article ID: 138854

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT 3.51 Service Pack 2
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT 3.51 Service Pack 2
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q138854



SYMPTOMS
On your computer running Windows NT version 3.51 with Service Pack 2 installed, when you connect to a NetBIOS-based computer using TCP/IP, the session or application hangs.

For example, this symptom occurs if you connect to a Hewlett Packard computer running Hewlett Packard LAN Manager/X (LM/X).

This problem only affects the session and not any other network or system activity.



CAUSE
The file NETBT.SYS incorrectly handles retarget responses.

When connecting to another system using NetBIOS over TCP/IP, Windows NT sends a NBT session request. Any system that responds with an NBT retarget response causes the session setup request to never complete, thereby hanging the session.



RESOLUTION
This problem has been corrected in the latest Service Pack for Windows NT version 3.51.



STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem was corrected in the latest Windows NT 3.51 U.S. Service Pack. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodnt 3.51 NETBT.SYS

Keywords: KB138854

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