Connecting Using NBT.SYS Causes Windows NT Session to Hang

 Last reviewed: September 6, 1996
Article ID: Q138854
The information in this article applies to:
  • Microsoft Windows NT Workstation version 3.51 with Service Pack 2
  • Microsoft Windows NT Server version 3.51 with Service Pack 2 -------------------------------------------------------------------------

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

KBCategory: kbnetwork kbbug3.51.sp2 kbfix3.51.sp4
KBSubcategory: ntnetserv ntprotocol NTSrvWkst
Additional reference words: prodnt 3.51 NETBT.SYS

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Last reviewed: September 6, 1996
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