A hotfix is available to change the way that Exchange Server 2003 SP2 handles a disabled Active Directory user account that is associated with an Exchange Server 2003 mailbox (916783)

MORE INFORMATION

If a disabled user account that is associated with an Exchange Server 2003 SP2 mailbox does not have the Associated External Account user right and the msExchMasterAccountSid property, Exchange Server 2003 cannot perform 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
• Successfully run the mailbox cleanup agent

Additionally, an event ID 9548 message is logged in the Application log when Exchange Server 2003 tries to perform any one of these actions. This issue occurs because the Microsoft Exchange Information Store service contains logic that assumes that every disabled user account that is associated with an Exchange Server 2003 SP2 mailbox has the Associated External Account user right and the msExchMasterAccountSid property.

A hotfix is available to change the logic in the Microsoft Exchange Information Store service. This hotfix causes the Microsoft Exchange Information Store service to operate as if the msExchMasterAccountSid property is set to the SELF SID value. Therefore, the Microsoft Exchange Information Store service uses the objectSid property of the disabled user account. After you apply this hotfix, Exchange Server 2003 can perform the actions in the list that is mentioned earlier in this document even if the disabled user account does not have the msExchMasterAccountSid property.

Hotfix information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft Exchange Server 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

You must install Microsoft Exchange Server 2003 Service Pack 2 (SP2) before you install the hotfix.

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

Restart requirement

You do not have to restart the computer after you apply the hotfix. However, the Microsoft Exchange Information Store Service and all dependent services will be restarted.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The global 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
Exosal.dll	6.5.7651.14	70,144	31-Mar-2006	02:35	x86
Mdbmsg.dll	6.5.7651.14	3,357,184	31-Mar-2006	00:07	x86
Store.exe	6.5.7651.14	5,253,120	31-Mar-2006	02:36	x86