DOCUMENT:Q138854  08-AUG-2001  [winnt]
TITLE   :Connecting Using NBT.SYS Causes Windows NT Session to Hang
PRODUCT :Microsoft Windows NT
PROD/VER::3.51 SP2,4.0
OPER/SYS:
KEYWORDS:

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The information in this article applies to:

 - Microsoft Windows NT Workstation versions 3.51 SP2, 4.0 
 - Microsoft Windows NT Server versions 3.51 SP2, 4.0 
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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

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Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT400search kbWinNTW351search kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351sp2 kbWinNTW351SP2
Version           : :3.51 SP2,4.0

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Copyright Microsoft Corporation 2001.