DOCUMENT:Q315817 08-MAY-2002 [winnt] TITLE :Memory Leak When You Are Running Server-to-Server Shadowing PRODUCT :Microsoft Windows NT PROD/VER::4.0,4.0 SP4,4.0 SP5,4.0 SP6 OPER/SYS: KEYWORDS:kbenv kberrmsg kbnetwork kbtool ====================================================================== ------------------------------------------------------------------------------- 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 ------------------------------------------------------------------------------- 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 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.