Curious if this is standard operation for others. Create User A on Exchange 2007, then connect to it using Outlook 2003. Create user B on Exchange 2007 then logon to OWA and create any calendar appointment. On User A Outlook 2003, create a calendar appointment and add User B. For me, it says free/busy information is unavailable for User B. Problem is solved by logging into User B account using Outlook. Is this by design? Or an oversight by Microsoft, or an issue with our configuration?