Microsoft KB Archive/313961

= XADM: The System Attendant Silently Stops Running =

Article ID: 313961

Article Last Modified on 2/19/2007

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APPLIES TO


 * Microsoft Exchange 2000 Server Standard Edition

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This article was previously published under Q313961





SYMPTOMS
On a highly stressed Exchange 2000 computer, the system attendant (Mad.exe) may silently stop running. No crash dump file is generated, and no event ID error message is logged in the event logs.

However, if a debugger is attached to Mad.exe, the process stops responding in the debugger with the following stack trace:

ChildEBP RetAddr Args to Child 0bcdedcc 78008fa5 e06d7363 00000001 00000003 KERNEL32!RaiseException+0x56 0bcdee0c 60ab691f 0bcdee20 60abac94 00000000 MSVCRT!_CxxThrowException+0x34 0bcdee5c 60ab6b58 0ab4e0e0 60ab8f0d 00000001 DSPROXY!std__vector >___Xran+0x62 0bcdee64 60ab8f0d 00000001 0000098c 00000000 DSPROXY!std__vector >__at+0x22 0bcdee98 60ab61c9 0000098c 00000000 00000002 DSPROXY!CNSPTargetList__ConnectTarget+0xa4 0bcdeef8 60ab41c5 00000c98 00000000 0000000f DSPROXY!_Worker__AddClient+0xe7 0bcdff80 7800a3c0 00000001 0000000f 0000000f DSPROXY!ListenBody+0x357 0bcdffb4 77e8758a 0ab52a60 0000000f 0000000f MSVCRT!_beginthreadex+0xca 0bcdffec 00000000 7800a361 0ab52a60 00000000 KERNEL32!BaseThreadStart+0x52



CAUSE
This problem may occur if a Named Service Provider Interface (NSPI) and an RFR client access DSPROXY at the same time, shortly after a domain controller that Exchange 2000 uses shuts down. The DSProxy may cause an unhandled exception that can silently stop the system attendant (Mad.exe).



RESOLUTION
To resolve this problem, obtain the latest service pack for Microsoft Exchange 2000 Server. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

301378 XGEN: How to Obtain the Latest Exchange 2000 Server Service Pack

The English version of this fix has the following file attributes or later:

Component: DSProxy

NOTE: Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 2.



STATUS
Microsoft has confirmed that this is a problem in Microsoft Exchange 2000 Server. This problem was first corrected in Microsoft Exchange 2000 Server Service Pack 3.

Keywords: kbbug kbexchange2000presp3fix kbexchange2000sp3fix kbfix KB313961

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