This Error event indicates that the Microsoft Exchange File Distribution service logged an error when it tried to copy a file.

• If MSExchangeFDS event 1019 is logged, this event indicates that the Microsoft Exchange File Distribution service did not synchronize offline address book files between Exchange servers that have the Mailbox server role and Client Access server role installed. The File Distribution service is used to distribute offline address book files and custom Unified Messaging prompts.
  
  This event may occur when either of the following conditions is true:
  
  
  • The synchronization operation is interrupted.
    
    
  • The destination directory that is specified in the event description cannot be found.
    
    
• If MSExchangeFDS event 1020 is logged, this event indicates that a generic failure occurred during a file copy operation. The error message that is specified in the event description indicates a specific cause for this failure.
  
  

To resolve this error, follow one or more of these steps:

• Restart the Microsoft Exchange File Distribution service from the Microsoft Windows Services console.
  
  
• If Event MSExchangeFDS event 1020 is logged, search the Microsoft Knowledge Base for information about the error that is specified in the event description. To do this, use the Search Knowledge Base feature at the Microsoft Help and Support Web site.
  
  
• Review the Application log and System log on your Exchange 2010 servers for related events. For example, events that occur immediately before and after this event may provide more information about the root cause of this error.
  
  
• Review the Operations Console in Operations Manager for detailed information about the cause of this problem. For more information, see the "Introduction" section in this article.
  
  
• Resolve your issue by using self-support options, assisted support options, and other resources. You can access these resources from the Exchange Server Solutions Center. From this page, click Self-Support Options in the navigation pane to use self-help options. Self-help options include searching the Microsoft Knowledge Base, posting a question at the Exchange Server forums, and others. Alternatively, in the navigation pane, you can click Assisted Support Options to contact a Microsoft support professional. Because your organization may have a specific procedure for directly contacting Microsoft Technical Support, be sure to review your organization's guidelines first.
  
  

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.