Offline address book not updating
In fact, Outlook cached mode will continue to download the offline address book every 24 hours regardless of whether the option is enabled.
Note: To locate this option, follow these steps: On the Tools menu, point to Send/Receive, point to Send/Receive Settings, and then click Define Send/Receive Groups. When you click to select the Download offline address book check box and then click Address Book Settings, the Offline Address Book dialog box appears.
–For Instructions for Outlook 2007 –For Instructions for Outlook 2011 –For Common errors and troubleshooting Step 2: Uncheck the box next to Download changes since last Send/Receive.
On our companies Exchange 2010 server, the most recently created mailboxes do not show up in the offline address book.This can cause the “Updating Address Book” status appearing for a long time.Outlook is helping you complete other activities and does not allow the address book update to interfere.In Cached Exchange Mode, Outlook 2007 & 2010 downloads a local copy of the Global Address List (GAL), but only updates it every 24 hours.In order to reflect any changes or updates made to the Global Address List, you can force Outlook to download a new copy of the GAL.