The Exchange store could not be loaded because the distinguished name (DN) of the message database does not match the DN of directory


Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Operations Manager monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this event, do one or more of the following:

  • Review the description of the event that includes the variables specific to your environment. From the Operator Console, select this alert, and then click the Properties tab.

  • Review all events that have been logged that meet the criteria of this Operations Manager alert. From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.


Product Name


Product Version

8.0 (Exchange Server 2007)

Event ID


Event Source


Alert Type


MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Mailbox/Information Store

MOM Rule Name

The Exchange store could not be loaded because the distinguished name (DN) of the message database does not match the DN of directory.

This Error event indicates that the Exchange mailbox database has a domain or organization name that is different from the name that is stored in Active Directory directory service. Typically, this situation occurs in server recovery situations.

The restored database cannot be part of a different Exchange organization.

To resolve this error, you need to reinstall the server that is running Exchange and use the organization name that is displayed in the event ID 1088 error message.

In Microsoft Exchange Server 2003 and previous versions, you could fix this error by modifiying the LegacyExchangeDN with ADSI Edit; however, that method is not supported and does not work correctly with Exchange 2007. For an overview of ADSI Edit, see ADSIedit Overview in the Microsoft Windows Server TechCenter.

For more information about this event, see Microsoft Exchange Server Analyzer article MSExchangeIS 1088: Cannot mount database because of invalid legacyExchangeDN.

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.


Community Additions