DOCUMENT:Q187686  09-AUG-2001  [winnt]
TITLE   :LookupAccountSid Causes Access Violation on Multihomed System
PRODUCT :Microsoft Windows NT
PROD/VER:WinNT:4.0
OPER/SYS:
KEYWORDS:kbWinNT400sp4fix

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The information in this article applies to:

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

Applications that use the LookupAccountSid() function on a multihomed system may
intermittently generate the following access violation in the calling function:

   Access violation (0x00000006)
   ERROR_INVALID_HANDLE

The problem occurs when this function is executed in a separate thread for each
attached network, on Windows NT computers that are attached to multiple
networks.

CAUSE
=====

After the second thread completes, it attempts to destroy the client context
handle, using the same handle that was closed by the first thread. This causes
the function to generate the access violation.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or
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 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition
Service Pack 4.


Additional query words: AV sid multiple nics multi-homed dr watson crash crashes

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Keywords          : kbWinNT400sp4fix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTS400 kbNTTermServ400 kbNTTermServSearch
Version           : WinNT:4.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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