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Q325646: Services.exe Heap Corruption If Messenger Service Does Not Start

Article: Q325646
Product(s): Microsoft Windows NT
Version(s): 4.0,4.0 SP6a
Operating System(s): 
Keyword(s): kbWinNT400nospFix
Last Modified: 10-JUL-2002

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The information in this article applies to:

- Microsoft Windows NT Server versions 4.0, 4.0 SP6a 
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SYMPTOMS
========

When you start your Windows NT 4.0-based server, the Messenger service may not
start correctly and the following entry may be recorded in the event log:

  Event ID: 7023
  Source: Service Control Manager
  Description: The Messenger service terminated with the following error

If you try to restart the Messenger service, Services.exe causes an error with
heap corruption and generates random errors messages such as:

  Error 1722 - The RPC server is unavailable.

CAUSE
=====

The heap corruption is caused by a double free that occurs when you try to
restart the Messenger service.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem that is described in this article. Apply it only to systems
that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information about support costs, visit the following Microsoft Web site:

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

NOTE: In special cases, charges that are ordinarily incurred for support calls
may be canceled if a Microsoft Support Professional determines that a specific
update will resolve your problem. The usual support costs will apply to
additional support questions and issues that do not qualify for the specific
update in question.

The English version of this fix has the file attributes (or later) that are
listed in the following table. The dates and times for these files are listed in
coordinated universal time (UTC). When you view the file information, it is
converted to local time. To find the difference between UTC and local time, use
the Time Zone tab in the Date and Time tool in Control Panel.

  Date         Time   Size    File name   Platform
  ------------------------------------------------
  09-Jul-2002  11:36  39,184  Msgsvc.dll  I386

NOTE: Because of file dependencies, this hotfix requires Microsoft Windows NT 4.0
Service Pack 6a.



STATUS
======

Microsoft has confirmed that this is a problem in the Microsoft products that
are listed at the beginning of this article.

Additional query words: dr. watson

======================================================================
Keywords          : kbWinNT400nospFix 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400sp6 kbWinNTS400search kbWinNTS400
Version           : :4.0,4.0 SP6a
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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