Topic Last Modified: 2010-09-12

The Microsoft Exchange Server 2010 Management Pack for System Center Operations Manager monitors the Windows Application log on computers running Exchange 2010 and generates this alert when the events specified in the following Details table are logged.

To learn more about this alert, in Operations Manager, do one or more of the following:


Product Name


Product Version

14.0 (Exchange 2010)

Event ID


Event Source


Alert Type


Rule Path

Microsoft Exchange Server/Exchange 2010/Common Components/File Distribution Service

Rule Name

File Distribution Service: Failed to read from metabase because specified metabase object could not be found. OAB synchronization suspended.


This Error event indicates that the Microsoft File Distribution service could not find one or more offline address book (OAB) objects in the metabase. The metabase contains configuration information about the OAB virtual directory that links to the OAB objects. The File Distribution service requires OAB virtual directory information to distribute OAB files.

This event may occur because of corrupted metabase or configuration problems in the OAB virtual directory.

User Action

To resolve this error, follow these steps.

  1. Verify that the OAB virtual directory exists. To do this, follow these steps:

    1. Open the Internet Information Services (IIS) Manager console.

    2. Expand the Sites container and then expand Default Web Site.

    3. Make sure that the Default Web Site container contains the OAB virtual directory. If the OAB virtual directory does not exist, you can use the New-OABVirtualDirectory cmdlet to create a new one. For more information, see New-OABVirtualDirectory.

      You may have to re-associate existing OABs with the new OAB virtual directory. This process is referred to as enabling Web-based distribution.
  • Review the Application log for related events. These related events may indicate a corrupted metabase. If the metabase is corrupted, you must restore the metabase. For more information, see Working with the Metabase (IIS 6.0).

For More Information

If you are not already doing so, consider running the Exchange tools created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.