This article has been archived. It is offered "as is" and will no longer be updated.
When you start the Mailbox Management process in Exchange 2000, the following event is logged to the application event log:
Type: Error Source: MSExchangeSA Category: Mailbox Management Event ID: 9202 Description: Failed to open default message store.
This problem occurs if both of the following conditions are true:
You run a MAPI program, such as ARCServe 2000 Backup Agent, on the Exchange 2000 server.
The MAPI program impersonates a user account at runtime. The user account that the program impersonates is a different user account than the user account that starts the program. For example, the process runs under the context of the Local System account and is initialized under the context of the Administrator account.
In this situation, a problem exists with the Mapi32.dll component where the Exchange profiles for the user accounts are incorrectly deleted from the registry after the MAPIInitialize function is called. Even though the registry keys that store the Exchange profiles are the same, the shared memory sections that are used to determine if a profile is in use are different. However, in versions of Mapi32.dll that are earlier than 6.0.6448.0, the same shared memory is used. As a result, Exchange profiles are deleted from the following key in the registry, and the Mailbox Management process does not start correctly:
To resolve this problem, obtain the September 2003 Exchange 2000 Server Post-Service Pack 3 (SP3) Rollup. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
824282 September 2003 Exchange 2000 Server Post-Service Pack 3 Rollup
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.
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, submit a request to 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.
Note Before you apply this hotfix to the server, you may have to stop all third-party services that load the Mapi32.dll component.To determine which services load Mapi32.dll, use the Task List Viewer (Tlist.exe) command-line tool. To do so:
Click Start, and then click Run.
In the Open box, type cmd, and then click Open.
At the command prompt, type the following command, and then press ENTER:
tlist -m mapi32.dll
The services that load Mapi32.dll are listed in the Cmd.exe window.
After you apply the hotfix, restart the third-party services that you stopped.
The English version of this hotfix has the file attributes (or later) 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 tool in Control Panel.
Date Time Version Size File name ----------------------------------------------------- 31-Mar-2003 23:34 6.0.6448.0 745,472 Mapi32.dll
Note Because of file dependencies, this update requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
301378 How to Obtain the Latest Exchange 2000 Server Service Pack
To work around this problem, do one of the following:
Restart the Microsoft Exchange System Attendant service. To do so:
Click Start, point to Administrative Tools, and then click Services.
In the right pane, right-click Microsoft Exchange System Attendant, and then click Restart.
When you are prompted whether you want to restart the services that are listed in the Restart Other Services dialog box, click Yes.
Restart the server.
When you do so, the MAPI profiles are re-created in the registry.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
The Task List Viewer (Tlist.exe) tool is included with the Microsoft Windows 2000 Support Tools. For additional information about how to install the Windows 2000 Support Tools, click the following article number to view the article in the Microsoft Knowledge Base:
301423 HOW TO: Install the Windows 2000 Support Tools to a Windows 2000 Server-Based Computer
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.