We have Exchange 2007, with 2007 and 2003 clients, we configure the offline address book to be accessible by both ( public folders and web ). The issue is that any external user who tries to go to " Tools, Send/receive, Download address book ", the dialog always fails with " 0X8004010F object cannot be found " The kicker is that our workaround has been to go into EMS, use the set-mailbox (user) -offlineaddressbook "(OAB)" Once this is done, the user can reconnect to Outlook, and can successfully download the OAB. The address book we are manually connecting to is actually already set as the DEFAULT. Its nice that I have a workaround, but shouldn't the default address book be accessible without having to perform this manual step? Its seems like security but its very hard to see where I am making changes. Thanks!

It should, but I don't have enough visibility into your Exchange organization to diagnose why it would be doing that. Why not just make the change for everyone and get it all over with in one step? Get-Mailbox -ResultSize Unlimited | Set-Mailbox -OfflineAddressBook "(OAB)" -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "madmist78" wrote in message news:ff2a75e2-5e60-43c3-919e-fd28af3b08e3... We have Exchange 2007, with 2007 and 2003 clients, we configure the offline address book to be accessible by both ( public folders and web ). The issue is that any external user who tries to go to " Tools, Send/receive, Download address book ", the dialog always fails with " 0X8004010F object cannot be found " The kicker is that our workaround has been to go into EMS, use the set-mailbox (user) -offlineaddressbook "(OAB)" Once this is done, the user can reconnect to Outlook, and can successfully download the OAB. The address book we are manually connecting to is actually already set as the DEFAULT. Its nice that I have a workaround, but shouldn't the default address book be accessible without having to perform this manual step? Its seems like security but its very hard to see where I am making changes. Thanks! Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."