Article ID: 191956
Article Last Modified on 10/28/2006
APPLIES TO
- Microsoft Exchange Server 5.0 Standard Edition
- Microsoft Exchange Server 5.5 Standard Edition
This article was previously published under Q191956
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:
191014 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.
Keywords: kbhotfixserver kbqfe kbbug kbfix kbqfe KB191956
