Hi, I configured meeting room mailbox on exchange 2010, and I configured it to not allow conflict reservation. I tried to sent two meeting requests in same time and it accepted both. please advice.

Hi, Try to get the property of Calender resouce first using: Get-CalendarProcessing Eg: Get-CalendarProcessing -Identity andrea@alpineskihouse.com | Format-List If anything is missing, correct it by running: Set-CalendarProcessing Eg: Set-CalendarProcessing -Identity "Conf 212" -AutomateProcessing AutoAccept -DeleteComments $true -AddOrganizerToSubject $true -AllowConflicts $false Regards from www.windowsadmin.info

Thx for replying, after applying Get-CalendarProcessing : unspaceId : e239fdd9-7e31-4ed3-9629-ef9951289fdd utomateProcessing : AutoAccept llowConflicts : False ookingWindowInDays : 180 aximumDurationInMinutes : 1440 llowRecurringMeetings : True nforceSchedulingHorizon : True cheduleOnlyDuringWorkHours : False onflictPercentageAllowed : 0 aximumConflictInstances : 0 orwardRequestsToDelegates : True eleteAttachments : True eleteComments : True emovePrivateProperty : True eleteSubject : True ddOrganizerToSubject : True eleteNonCalendarItems : True entativePendingApproval : True nableResponseDetails : True rganizerInfo : True esourceDelegates : {} equestOutOfPolicy : {} llRequestOutOfPolicy : True ookInPolicy : {} llBookInPolicy : True equestInPolicy : {} llRequestInPolicy : True ddAdditionalResponse : False dditionalResponse : emoveOldMeetingMessages : True ddNewRequestsTentatively : True rocessExternalMeetingMessages : False emoveForwardedMeetingNotifications : False ailboxOwnerId : sale-co.com.bh/Users/Meeting Room dentity : sale-co.com.bh/Users/Meeting Room sValid : True but meeting room email not sending conflict notification how to enable sending conflict notification?

Try running the -automateprocessing autoaccept again. Running it a second time has helped other users experiencing double booking. Set-CalendarProcessing -Identity "Conf 212" -AutomateProcessing AutoAcceptJames Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Thank you Jamestechman. It worked :)