To perform the following procedure, the account you use must be delegated the following:

• Exchange Organization Administrator role
  

For more information about permissions, delegating roles, and the rights that are required to administer Microsoft Exchange Server 2007, see Permission Considerations.

Also, be aware that the procedures in this topic will only start the update process. It can take from several minutes to several hours to complete the process. New content will not be available until the process is complete.

 To use the Exchange Management Console to update an offline address book

1. Start the Exchange Management Console.

2. In the console tree, expand Organization Configuration, and then click Mailbox.

3. In the result pane, click the Offline Address Book tab, and then click the OAB that you want to update.

4. In the action pane, click Update.

5. Read the warning box, and then click Yes to continue.

 To use the Exchange Management Shell to update an offline address book

• Run the following command:

  Update-OfflineAddressBook -Identity <OfflineAddressBookIdParameter>

  For example, to update the OAB named My OAB, run the following command:

  Update-OfflineAddressBook -Identity "My OAB"

For detailed syntax and parameter information, see the Update-OfflineAddressBook reference topic.

For more information about managing OABs, see the following topics:

• Managing Offline Address Books
  
• How to Create an Offline Address Book
  
• How to View and Modify Offline Address Book Settings