Outlook address book not updating in cached mode

After migrating from Exchange 2007 to 2010 and running co-existance for a bit, users noticed that their GAL was missing new addresses.

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HOW TO FIX THIS First check that your databases are pointing to the correct 2010 server for Default public folder database and Offline address book.In EMC Organization Configuration Client Settings tab In Windows Explorer Delete all files/directories INSIDE but not the directories themselves: C:\Program Files\Microsoft\Exchange Server\V14\Exchange OAB C:\Program Files\Microsoft\Exchange Server\V14\Client Access\OAB In EMC Server Configuration select OAB (Default Web Site) and click OK.Click Next, when prompted choose Yes to All and choose Finish when complete. In a command prompt iisreset (/noforce is optional, MS support never had me use it) In Exchange Management Shell Set-OABVirtual Directory -Identity “OAB (Default Web Site)” -Require SSL $true -External URL “https://exchange.contoso.com/OAB” Get-OABVirtual Directory |fl Verify your Internal URL (http) and External URL (https) and Require SSL True In EMC Organization Configuration Yes In Services MMC Restart the service: Microsoft Exchange File Distribution (This will populate the OAB guid in C:\Program Files\Microsoft\Exchange Server\V14\Client Access\OAB) In a command prompt iisreset (/noforce is optional, again MS support never had me use it) Here is this entire documentation in PDF format with screenshots to help.You can use Group Policy to disable Microsoft Exchange global address list (GAL) synchronization with Microsoft Outlook 2010.You can use Group Policy to disable Microsoft Exchange GAL synchronization with Outlook 2010 contacts.

If you want Outlook 2010 to prompt users before it synchronizes to the Exchange GAL, configure the registry settings as described in this article.In this article: Outlook 2010 synchronizes its Contacts folder entries to contacts that have matching SMTP addresses in the Exchange GAL.This synchronization is one-way: from the GAL to the Outlook Contacts folder.Discrepancies in contact telephone numbers might occur when the telephone entries in users’ Outlook Contacts folder are created in a different format from the one that is used in the corporate GAL.For example, a locale might require one kind of telephone number prefix format for calling from inside the country and another prefix format for calling from outside the country.If a user creates his or her Outlook 2010 contacts by using the prefix formats that are required to dial from outside the country, a “move correction” occurs when Outlook 2010 contacts are updated by using details from the GAL.