Microsoft KB Archive/244925

= Windows NT 4.0 Csrss.exe Stops Responding with a Stop 0xc000021A Error Message =

Article ID: 244925

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6
 * Microsoft Windows NT Server 4.0 Enterprise Edition
 * Microsoft Windows NT 4.0 Service Pack 4
 * Microsoft Windows NT 4.0 Service Pack 5
 * Microsoft Windows NT 4.0 Service Pack 6
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Workstation 4.0
 * Microsoft Windows NT Workstation 4.0 Developer Edition

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This article was previously published under Q244925



SYMPTOMS
When you receive an access violation in the Csrss.exe file, your computer may generate a "stop 0xc000021a" error message (bugcheck). If you perform a user dump, it displays the following register contents and the thread call stack at the time of failure:

> r

EAX=00000000 EBX=00297848 ECX=f000ff47 EDX=000000b0 ESI=00285ac8 EDI=00285ac8

EIP=5ffb5d04 ESP=0062feb8 EBP=0062fef8 EFL=00013246

CS=001b DS=0023 ES=0023 SS=0023 FS=0038 GS=0000

> kb

FramePtr RetAddr Param1 Param2 Param3 Function Name

0062feb8 5ffc0f9a 00000000 00285ac8 00000cec WINSRV!AddProcessToList+0x24

0062fef8 5ff927a4 0062ff14 0062ffd0 00000005 WINSRV!SrvAllocConsole+0x18a

0062fff4 00000000 00000088 00000000 00000000 CSRSRV!CsrApiRequestThread+0x5a5



CAUSE
This problem can occur under low memory conditions. When this occurs, creation of the console window can fail, and the "FreeConsoleHandle" call is made without locking the console handle table.



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 computers 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 should have the following file attributes or later:

  Date      Time                 Size      File name     Platform - 10/25/1999  4:14 pm              175,376   Winsrv.dll     x86 10/25/1999  4:13 pm              314,128   Winsrv.dll     Alpha 10/18/1999  4:41 pm            1,250,896   Win32k.sys     x86 10/18/1999  4:39 pm            2,049,904   Win32k.sys     Alpha 10/18/1999  6:54 pm              335,120   User32.dll     x86 10/18/1999  6:52 pm              577,296   User32.dll     Alpha 10/18/1999  6:53 pm              166,160   Gdi32.dll      x86 10/18/1999  6:52 pm              307,984   Gdi32.dll      Alpha



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0.

Keywords: kberrmsg kbfix kbqfe kbenv kbprb kbhotfixserver KB244925

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