Topic Last Modified: 2010-09-13

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: Remote file not found. Current synchronization task aborted.


This Error event indicates that the file that is specified in the event description is missing. The Microsoft Exchange File Distribution service requires this file to complete the file synchronization task. By default, the Microsoft Exchange File Distribution service synchronizes offline address book (OAB) files every eight hours between Exchange servers that have the Mailbox server role and the Client Access server role installed. The service also distributes custom Unified Messaging (UM) prompts.

This event may occur when one of the following conditions is true:

  • One or more OAB files are missing on a Mailbox server. These address book files exist in every OAB directory (represented by its GUID) in the ExchangeOAB file share.

  • One or more Unified Messaging files are missing on an Exchange server that has the Unified Messaging server role installed.

User Action

To resolve this error, follow these steps:

  1. If the file that is specified in the event description is an OAB file, regenerate the file by using the following procedure:

    1. Note the OAB GUID that follows the ExchangeOAB file share in the event description.

    2. Run the following Exchange Management Shell command:

      Update-OfflineAddressBook -Identity <offline address book identifier>

    Note   In this command, replace <offline address book identifier> with the GUID that you noted in step 1. For more information, see Update the Offline Address Book.

    1. Restart the Microsoft Exchange File Distribution service from the Microsoft Windows Services console on the Exchange server that logged this event.

      If this procedure does not resolve the error, move all the files from the OAB directory (indicated by the GUID that you determined in step 1) on the ExchangeOAB file share to any other directory. Then, follow steps b and c again.
  2. If the file that is specified in the event description is a Unified Messaging file, use one or both of the following methods:

    • If you have multiple UM servers, copy the missing file from another UM server.

    • Rerecord the missing file.

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.