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Microsoft KB Archive/252186

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Knowledge Base

Stop 0x0000000A Error Message in the Rdr.sys File While Removing Dormant Server Connections

Article ID: 252186

Article Last Modified on 11/1/2006


  • Microsoft Windows NT Server 4.0, Terminal Server Edition

This article was previously published under Q252186


When your Windows NT Terminal Server-based computer removes dormant server connections, it may generate an error message similar to the following error message in the Rdr.sys file on a blue screen:

STOP: 0x0000000A (0xf7223c1c, 0x00000002, 0x00000000, 0xf71e9ec5) IRQL_NOT_LESS_OR_EQUAL

NOTE: The parameters may differ based on your computer configuration, but the last parameter (0xf71e9ec5) will be the same if you are running the x86 version of Windows NT, Terminal Server Edition with Service Pack 5 installed.


This problem can occur when the redirector tries to obtain access to a timeout value that is stored in paged pool memory while running at Dispatch Level.


To resolve this problem, obtain the latest service pack for Windows NT Server version 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack


This problem was first corrected in Windows NT Server version 4.0, Terminal Server Edition Service Pack 6.


The following is an example of the information you may receive if you use the Kernel Debugger tool to view a memory dump:

NOTE: Some of the numeric information may differ based on your computer configuration, however, the symbolic information will be similar if not exactly the same.

0: kd> !Trap bfbc7e94
!Trap bfbc7e94
eax=00000000 ebx=f71ede10 ecx=001b997a edx=82297d70 esi=f71edd90
edi=f71edf08 eip=f71e9ec5 esp=bfbc7f08 ebp=bfbc7f18 iopl=0
nv up ei ng nz na pe cy
vip=0 vif=0
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000
ErrCode = 00000000
f71e9ec5 030d1c3c22f7 add ecx,[rdr!RdrFailedConnectTimeout
0: kd> !k
ChildEBP RetAddr
bfbc7f18 f71ee186 rdr!RdrScavengeServerEntries+0x2f
bfbc7f20 f71eb4d7 rdr!RdrTimer+0x6
bfbc7f34 8010c1cd rdr!RdrExecutiveWorkerThreadRoutine+0x41
bfbc7f4c 8014056c ntkrnlmp!ExpWorkerThread+0x73
bfbc7f7c 8014c0be ntkrnlmp!PspSystemThreadStartup+0x54

Keywords: kbhotfixserver kbqfe kbbug kbenv kbfix KB252186