Article ID: 2665915 - View products that this article applies to.
When Microsoft Outlook is configured in Cached Exchange mode and you open the Address Book, the Global Address List (GAL) is not displayed by default. Instead, another address list such as \All Users is displayed, and the GAL must be manually selected from the When opening the address book, show this address list first Address Book option. This is demonstrated in the following figure:
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You may also receive an error similar to the following error in a synchronization log message when you attempt to download the Offline Address Book (OAB):
Microsoft Exchange offline address bookIn the situation where you are unable to download the OAB, you will find the following event in the application event log.
Not downloading Offline address book files. A server (URL) could not be located
Event ID: 27
Description: The operation failed.
This behavior may occur if multiple address lists are included as part of the Offline Address Book (OAB) generation on the server that is running Microsoft Exchange Server.
This can also occur in Outlook 2010 when the When opening the address book, show this address list first option is set to Choose automatically.
When multiple address lists are included in the OAB, each address list is built as an OAB and is available for download to the Outlook clients. In this scenario, when Outlook receives the list of available OAB's, it does not necessarily download the one for the Global Address List by default.
To resolve this issue, set the Global Address List as the only address list for which an OAB is generated on the Exchange server. To do this, follow these steps:
Note The Microsoft Exchange server generates updated offline address book files at a 24-hour interval. Therefore, at worst it can take 24 hours for a new Outlook profile to not exhibit the problems described in the "Symptoms" section.
For existing Outlook profiles, you can manually change the OAB that is downloaded to the one that is built from the Global Address List.
In Outlook 2010, the Choose automatically option was added as the default option for compatibility with the new multiple Exchange accounts feature. In configurations in which multiple Exchange accounts are configured, the Choose automatically option lets the correct GAL be displayed for the selected Exchange account.
To set the default address list when you open the Address Book in Outlook 2010, follow these steps: