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Q191956: XADM: System Attendant (Mad.exe) Stops in ScSetDeleted

Article: Q191956
Product(s): Microsoft Exchange
Version(s): WinNT:5.0,5.5
Operating System(s): 
Keyword(s): exc55sp2fix
Last Modified: 29-APR-1999

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The information in this article applies to:

- Microsoft Exchange Server, versions 5.0, 5.5 
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SYMPTOMS
========

The Microsoft Exchange System Attendant (Mad.exe) stops (crashes). If you have
Dr. Watson enabled, which it is by default, and you have Exchange symbols
installed on the computer, the Drwtsn32.log file contains the following call
stack:

  Function Name
  -------------
  mad!CSecurity::ScSetDeleted
  mad!ScUpdateExchAdminAccountsOnRegistryKeys
  mad!CAdminRegTask::Work
  mad!CTimerTask::DwLoop
  mad!CTimerTask::DwLoopStatic

CAUSE
=====

One of the tasks of the Microsoft Exchange System Attendant is to periodically
check to see whether any user accounts have been added to the Site and
Configuration containers with Administrator-level permissions. If it finds this
to be the case, it needs to give or take away rights to the local machine's
registry for those user accounts.

There was a logic error in this procedure that could cause the Microsoft Exchange
System Attendant to stop responding in rare events.

RESOLUTION
==========

To resolve this problem, obtain the latest service pack for Exchange Server
version 5.5. For more information, please see the following article in the
Microsoft Knowledge Base:

  Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack




STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Exchange Server
versions 5.0 and 5.5.


A supported fix is now available, but has not been fully regression-tested and
should be applied only to systems experiencing this specific problem. Unless you
are severely impacted by this specific problem, Microsoft recommends that you
wait for the next service pack that contains this fix. Contact Microsoft Product
Support Services for more information.



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Keywords          : exc55sp2fix 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2
Version           : WinNT:5.0,5.5
Issue type        : kbbug
Solution Type     : kbfix

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