This article describes a hotfix that you can apply to modify the way that Microsoft Exchange Server 2003 handles a disabled Active Directory directory service user account that is associated with an Exchange Server 2003 mailbox.

Note The functionality of this hotfix is not included in Microsoft Exchange 2003 Service Pack 2 (SP2). Therefore, if you install Exchange Server 2003 SP2, the behavior will revert to a state that is prior to the hotfix. If you require the functionality of this hotfix after you apply Exchange Server 2003 SP2, view the following Microsoft Knowledge Base article for more information:

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A disabled user account that is associated with an Exchange Server 2003 mailbox requires the Associated External Account right together with the msExchMasterAccountSid property for Exchange Server 2003 to successfully perform any one or more of the following actions:

•	Enable a different user to log on to the mailbox
•	Enable the mailbox to receive messages
•	Include the mailbox in a public folder access control list
•	Include the mailbox in a mailbox folder access control list
•	Move the mailbox
•	Enable the mailbox cleanup agent to successfully finish

The Microsoft Exchange Information Store service contains logic that assumes that every disabled user account that is associated with an Exchange Server 2003 mailbox has the Associated External Account right and the msExchMasterAccountSid property. If Exchange Server 2003 performs one of these actions on a disabled user account that does not have the msExchMasterAccountSid property, event ID 9548 is logged in the Application log. Additionally, the action that Exchange Server 2003 performed finishes unsuccessfully.

A hotfix is available to change the logic in the Microsoft Exchange Information Store service. After you apply this hotfix, the Microsoft Exchange Information Store service acts as if the msExchMasterAccountSid property is set to the well-known SELF SID value. Therefore, instead of finishing unsuccessfully, the Microsoft Exchange Information Store service uses the objectSid property of the disabled user account.

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Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

No prerequisites are required to apply this hotfix.

Restart requirement

You do not have to restart the computer after you apply this hotfix. However, the Microsoft Exchange Information Store service and all its dependent services are automatically stopped and then restarted when you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

File name	File version	File size	Date	Time	Platform
Mdbmsg.dll	6.5.7234.3	3,269,632	23-Feb-2006	04:52	x86
Redir.asp	Not applicable	3,304	29-Jan-2006	20:50	Not applicable
Store.exe	6.5.7234.3	5,201,408	23-Feb-2006	05:29	x86

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Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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For more information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

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