Running Exchange 2010 - resource mailboxes are not declining apointments when another apointment exists. As far as I can tell this is happening with all resource mailboxes in our org. Not sure where to start but here are the results of a Get-CalendarProcessing roomname | fl: RunspaceId : 3555b664-7566-4347-87b6-84b7b897f13c AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 180 MaximumDurationInMinutes : 1440 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : True DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : True AddOrganizerToSubject : True DeleteNonCalendarItems : True TentativePendingApproval : True EnableResponseDetails : True OrganizerInfo : True ResourceDelegates : {} RequestOutOfPolicy : {} AllRequestOutOfPolicy : False BookInPolicy : {} AllBookInPolicy : False RequestInPolicy : {} AllRequestInPolicy : False AddAdditionalResponse : False AdditionalResponse : RemoveOldMeetingMessages : True AddNewRequestsTentatively : True ProcessExternalMeetingMessages : False RemoveForwardedMeetingNotifications : False MailboxOwnerId : edited Identity : edited IsValid : True

Is it accepting them? It looks to me like you have AllBookInPolicy set to $False and you're forwarding all requests to the delegates. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, For your information, it is my meeting room configuration which works fine with conflict settings: RunspaceId : 6175c06e-d33e-489e-b85e-e38365545cb6 AutomateProcessing : AutoAccept AllowConflicts : False BookingWindowInDays : 180 MaximumDurationInMinutes : 1440 AllowRecurringMeetings : True EnforceSchedulingHorizon : True ScheduleOnlyDuringWorkHours : False ConflictPercentageAllowed : 0 MaximumConflictInstances : 0 ForwardRequestsToDelegates : True DeleteAttachments : True DeleteComments : True RemovePrivateProperty : True DeleteSubject : 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 RemoveForwardedMeetingNotifications : False MailboxOwnerId : a.com/Users/MR2 Identity : a.com/Users/MR2 IsValid : True Please change the configuraton according to the above. If the issue continues, create a new room mailbox and test again. Fiona Liao TechNet Community Support

It looks like the only setting that is different is the AllBookInPolicy setting. Is there a way to change that for all resource mailboxes in my org?

You can use PowerShell. Get-Mailbox -RecipientTypeDetails RoomMailbox | Set-CalendarProcessing -AllBookInPolicy $True]#Unnecessary comment Of course, test the setting on one mailbox to be sure it fixes things before you apply it to all. Run the Get-Mailbox -RecipientTypeDetails RoomMailbox by itself first to be sure you get just what you want and don't go applying that setting to a whole bunch of other stuff you don't want it applied to. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Tested on one mailbox and it fixed the problem. Thanks Ed!! - that command worked for changing the rest of them.

Happy to have helped.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

It seems like this is not working when I send a calendar invite form an external user. Is it possible to make this work for any external use rthat tries to book this room?

What exactly isn't working?Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."