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Q315817: Memory Leak When You Are Running Server-to-Server Shadowing

Article: Q315817
Product(s): Microsoft Windows NT
Version(s): 4.0,4.0 SP4,4.0 SP5,4.0 SP6
Operating System(s): 
Keyword(s): kbenv kberrmsg kbnetwork kbtool
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Windows NT Server versions 4.0, 4.0 SP4, 4.0 SP5, 4.0 SP6, Terminal Server Edition 
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SYMPTOMS
========

When you are running server-to-server shadowing with Windows NT 4.0 and Citrix,
non-paged pool memory may leak and eventually generate a "STOP 0x00000041" error
message on a blue screen. This problem is compounded when the shadowing session
is performing intensive graphical functions.

CAUSE
=====

Non-paged pool memory is being allocated but not freed by the Tdpipe.sys driver.
The pool tag for the pool that is being allocated is Mdl.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems 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 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

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal 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 should have the following file attributes or
later:

  Date         Time   Size    File name    
  ---------------------------------------
  07-Jan-2002  10:47  12,728  Tdasync.sys
  07-Jan-2002  10:47  18,648  Tdipx.sys  
  07-Jan-2002  10:47  17,080  Tdnetb.sys  
  07-Jan-2002  10:47  10,360  Tdpipe.sys  
  07-Jan-2002  10:47  16,248  Tdspx.sys  
  07-Jan-2002  10:47  18,488  Tdtcp.sys  

NOTE: Due to file dependencies, this hotfix requires Microsoft Windows NT 4.0
Terminal Server Service Pack 6a.



STATUS
======

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


Additional query words:

======================================================================
Keywords          : kbenv kberrmsg kbnetwork kbtool 
Technology        : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTS400search kbNTTermServ400 kbNTTermServ400sp4 kbNTTermServ400sp5 kbNTTermServ400sp6 kbNTTermServSearch
Version           : :4.0,4.0 SP4,4.0 SP5,4.0 SP6
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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