We recently upgraded to Exchange 2007 from 2003. I updated all of our resources to the new resource mailbox type and configured the automated processing and MailboxCalendarSettings. Room booking seems to work fine; however, we just found that people are unable to update the time of a meeting and do a 'Send Update' or cancel a meeting. If either is attempted, we get the following error in Outlook (only tested in Outlook 2007): You marked "Room Name" as a resource. You cannot schedule a meeting with "Room Name" because you do not have the appropriate permissions for that account. Either enter the name as a required or optional attendee or talk to your administrator about giving you permission to schedule "Room Name". Here is the output of Get-MailboxCalendarSettings: AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 180 MaximumDurationInMinutes : 0 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : True DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : True DisableReminders : True AddOrganizerToSubject : True DeleteNonCalendarItems : True TentativePendingApproval : True EnableResponseDetails : True OrganizerInfo : True ResourceDelegates : {} RequestOutOfPolicy : AllRequestOutOfPolicy : False BookInPolicy : AllBookInPolicy : True RequestInPolicy : AllRequestInPolicy : False AddAdditionalResponse : False AdditionalResponse : RemoveOldMeetingMessages : True AddNewRequestsTentatively : True ProcessExternalMeetingMessages : False DefaultReminderTime : 15 RemoveForwardedMeetingNotifications : False Identity : domain.com/resourcename --
