Outlook will eventually catch up on the downloaded copy and that person will disappear. I think by default, it downloads every 24 hours, but with the program getting closed and opened repeatedly, I don't know how that affects the schedule. Plus with the server regenerating the GAL at night, the cycles can be thrown off that way too if they don't happen to match up for a few days. Also, I've had problems where I can force a GAL update in the middle of the day and then make Outlook try to download the changes, but even when the download completes, the changes aren't there. So I'll usually just delete the OAB files and redownload from scratch. As far as I know, there's no GPO to force more frequent updates in Outlook. Jon Jon Galbreath MCSE/Security+ Systems Administrator International Studies and Programs Ph: 517-884-2144 [log in to unmask] -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of Al Puzzuoli Sent: Tuesday, March 17, 2009 9:33 AM To: [log in to unmask] Subject: [MSUNAG] Can I make Exchange clients Download the Offline Address Book More often? The subject pretty much says it all. Last week, I removed a user from a distribution group; However as of today, most of my clients are still showing that person as being part of the list. If I manually redownload the offline address book on each client, the change shows up. Is there a GPO or something that controls the frequency of address book updates? TIA, Al Puzzuoli Michigan State University Information Technologist http://www.rcpd.msu.edu Resource Center for Persons with Disabilities 120 Bessey Hall East Lansing, MI 48824-1033 517-884-1915