DOCUMENT:Q234593  20-MAY-2002  [winnt]
TITLE   :WinNT 4.0 Tcpip.sys Hotfixes Dated 4/28/99 to 5/28/99 Replaced
PRODUCT :Microsoft Windows NT
PROD/VER:winnt:4.0 SP5
OPER/SYS:
KEYWORDS:kbWinNT4sp6fix

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The information in this article applies to:

 - Microsoft Windows NT Server version 4.0, Terminal Server Edition 
 - Microsoft Windows NT Server version 4.0 SP5 
 - Microsoft Windows NT Workstation version 4.0 SP5 
 - Microsoft Windows NT Server, Enterprise Edition version 4.0 SP5 
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SYMPTOMS
========

Post-SP5 hotfixes for the Tcpip.sys driver dated April 28, 1999 to May 28, 1999
contain a regression that could cause your multiprocessor computer to stop
responding (hang).

CAUSE
=====

This problem occurs because of changes made in earlier hotfixes included an
error in locking code. This error can cause your multiprocessor computer to
"deadlock" or hang.

RESOLUTION
==========

Windows NT Server or Workstation 4.0
------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the
individual software update. For information on obtaining the latest service
pack, please go to:

 - http://www.microsoft.com/Windows/ServicePacks/

-or-

 - Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack

For information on obtaining the individual software update, contact Microsoft
Product Support Services. For a complete list of Microsoft Product Support
Services phone numbers and information on support costs, please go to the
following address on the World Wide Web:

   http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS


Windows NT Server 4.0, Terminal Server Edition
----------------------------------------------

To resolve this problem, obtain the latest service pack for Windows NT Server
4.0, Terminal Server Edition. For additional information, please see the
following article in the Microsoft Knowledge Base:

   Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS
======

Microsoft has confirmed this to be a problem in Windows NT 4.0 and Windows NT
Server 4.0, Terminal Server Edition.

This problem was first corrected in Windows NT Server 4.0 Service Pack 6 and
Windows NT Server 4.0, Terminal Server Edition Service Pack 6.

MORE INFORMATION
================

These hotfix files should be replaced with the newer files.

Affected hotfixes are described by the following articles:

   Q223450 TCP Initial Retransmission Timer Adjustment Added to Windows NT

   Q224585 TCB Hash Function Modified to Improve Network Performance

   Q230307 Slow Performance in TCP/IP When Reconnecting

   Q230381 TCP/IP Dead Gateway Detection May Not Work if ARP Cache Empty

   Q232512 TCP/IP May Retransmit Packets Prematurely

Additional query words: multi processor multi-processor

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Keywords          : kbWinNT4sp6fix 
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNTW400search kbWinNT400search kbWinNTW400sp5 kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400sp5 kbWinNTS400sp5 kbWinNTS400search kbNTTermServ400 kbNTTermServSearch
Version           : winnt:4.0 SP5
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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Copyright Microsoft Corporation 2002.