In Exchange 2010, when using cached exchange mode, it is possible to send out the Offline Address Book regularly to your exchange servers
1: Log into Exchange Management console start>all programs> Microsoft exchange server 2010>exchange management console
2: Drill down to Microsoft exchange on-premises>organization configuration> mailbox. Click on offline address book tab
3: Note down the generation server.
4: On the right hand pane, click update, when prompted for confirmation, click Yes. This should take less than a minute to update.
5: Open services (start> all programs> administrative tools> services), right click on services on the left hand pane, select “connect to another computer” browse to your generation server
6: restart the Microsoft exchange system attendant service. Safe to do during prod hours as there are no dependencies on this service. This process should take less than 30 seconds
7: To push the updated changes to each CAS server, open exchange management shell and type the following cmdlet for each of your CAS servers:
Update-filedistributionservice <CAS server>
8:Open event viewer on each server, note Event ID: 9826, check this to verify that there are no errors.
9: Check address book in outlook in an hour.