how often outlook download offline address book

If you need to send a message immediately to a recently added or changed contact that is not showing up in your Outlook Address Book you can find them using the Outlook web client. However, if the change has not yet been applied to the offline address book it may not contain the e-mail address or distribution list you are trying to find. When Outlook is configured in Cached mode operation this offline copy of the address book is utilized as the default way to lookup addresses. You can send from an alias address by selecting it from the From button. Outlook will remember these addresses so you’d only have to do it once per alias. This process was designed so that Outlook could run on a computer or laptop while not being connected to the network and still resolve the address book entries to queue the sending of e-mails in the outbox folder. When using Outlook 2010, these aliases aren’t automatically being added to the list to choose from but you can add them manually by choosing Other Email Address. The Offline Address Book is created once a day and the Outlook client will check for updates once every 24 hours. The update delay is related to the generation and distribution of the Microsoft Exchange Offline Address Book. The cached exchange mode significantly speeds up the user experience and should not be disabled as a workaround to this problem.

The Outlook E-mail client when running in cached mode (as most machines on campus should be) may take up to 24 hours to show changes to the Global Address List (GAL). Under Send / Receive, select Send/Receive Groups, then Download Address Book: Select Download changes since last Send/Receive, then choose the address book you want to update: Click OK. The global address book in my Outlook client is out of date To download changes to your Offline Global Address List, open Outlook.

IIS log shows HTTP error 206 (partial download) on the oab. If Outlook is left running constantly in Cached Exchange Mode, it updates the Offline Address Book automatically about once a day, depending on Address Book updates on the server running Exchange. Windows Server 2003 64bits English with Exchange 2007 SP1 French Receive) Outlooks hangs at 10% ('Copying offline address book template When trying to download the OAB (through the Options menu Send/ Outlook 2007 uses Outlook Anywhere to get the GAL through https Autodiscovery, OAB, EWS all working fine (tested again and again) A few month ago, another post in this NG refered to the same issue :

How often outlook download offline address book