Is it possible to move the offline address book to another location/drive?

by Ilse Van Criekinge [Published on 15 June 2010 / Last Updated on 8 July 2009]

Is it possible to move the offline address book to another location/drive?

Yes, you can move the offline address book to another location than the default location which is set to the folder %userprofile%\Local Settings\Application Data\Microsoft\Outlook. But to do so, you need to make changes in the registry, and you need to remember that serious problems might occur if you modify the registry incorrectly!
Open the registry, and locate the following registry subkey
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Profile_name\13dbb0c8aa05101a9bb000aa002fc45a
Create a new String Value, name it 001e660e, and set its value to the path of the folder where you want to store the offline address book files. You will need to restart Outlook, and synchronize the Offline Address Book to download the Offline Address Book to the new location.You will need to remove the .oab files in the old location manually!

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The Author — Ilse Van Criekinge

Ilse Van Criekinge is an ICT Consultant-Trainer at Global Knowledge Belgium. As an MCT since 2001, Ilse has offered several companies guidance in their Exchange deployments, and auditing their disaster recovery capabilities. For the last three years she has ignited an enthusiasm within many IT Professionals with the power of Microsoft Unified Communications, delivering training and co-founding a new user group in Belgium Ilse has been awarded the Exchange MVP award since April 2007. She has coauthored the Exchange Exam Prep Guide for Sybex, and has written “Exchange Management Shell: TFM” for SAPIEN. Ilse won the Microsoft Speaker Idol contest in Barcelona 2007.