Exchange Calendaring Issues in iOS 6

Some Apple mobile users have reported random and intermittent issues using the Exchange calendar. iPhone 5 users or other Apple mobile users who have upgraded to iOS 6 might experience a problem when handling multi-attendee meeting invitations. In these cases, a meeting appears to have been canceled by the organizer when an invited attendee declines the meeting. 

IT Services does not recommend updating mobile devices to iOS 6 until this issue is resolved. Users who have already upgraded to iOS 6 can avoid calendaring issues by managing their calendars at exchange.uark.edu. There have been no reports of calendaring problems in Outlook 2010.