The CLIENT ACCESS role checks for changes every 8 hrs. p=77 Also you can read up on how the OAB is distributed and the scheduling of that distribution here: On top of these delays, if a client does not close/open his or her Outlook, it can take even longer for a change to take place. p=312 It's the Exchange CAS not updating the Offline address book file: C:\Program Files\Microsoft\Exchange Server\V14\Client Access\OAB\Something-Something-Darkside\I just restarted the Microsoft Exchange File Distribution service on the CAS server and it updated. After the OAB is updated, which by default is once a day, it may take up to 8hrs for the OAB to be available to the client.
When i look in this folder (C:\Program Files\Microsoft\Exchange Server\V14\Client Access\OAB) on the IIS server, I see a folder with date modified today, but the files in this folder have all modified date a few months ago ? Ive also found a folder (C:\Program Files\Microsoft\Exchange Server\V14\Exchange OAB) which contains more recent files but not from today when i updated the offline address book via the exchange management console What am i missing ?
In Exchange 2010 it takes even longer to synchronize the changes in the OAB than Exchange 2007.
Please visit the document on How to turn on or off Cached Exchange Mode for (Outlook 2010, and Outlook 20).
Outlook 2011 does not use Exchange Cached mode and directly connects to the Global Address Book (GAL) via LDAP connection.
Microsoft also has some great training videos you can watch to become familiar with using Office 365 applications.