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confoundr
Asked: 2019-10-10 14:07:34 +0800 CST

Double Booking Issue on Exchange Room Resource

  • 772

I am working on a double booking issue where Room calendars appear to be allowing meetings to be booked at the same time as other meetings. The calendars themselves seem to have the correct settings, and I can't seem to recreate the issue myself-- however, I do know it is a problem as this issue has come up once a week for the past 3 weeks in separate resource mailboxes, with different people.

This is an exchange-hybrid setup. Room calendars are created in o365, not synced.

I currently have a case open with Microsoft, however they have been closing the case on me due to not being able to recreate the issue on demand.

Is there anything I could try?

Thank you for any additional information.

Update (10/10/2019):

The Rooms are declining the conflict meetings, but the meetings stay in the user's calendar. Checking sent items a declined notice was sent to the user mailbox.

A room resource not being able to delete a users meeting from their mailbox could be normal functionality, I'm double checking with Microsoft.

Resource Mailbox Details

get-mailbox [email protected] | Get-CalendarProcessing | FL

AutomateProcessing                  : AutoAccept
AllowConflicts                      : False
BookingType                         : Standard
BookingWindowInDays                 : 365
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
IsValid                             : True
ObjectState                         : Changed
microsoft-office-365

3 Answers

  1. Hi,

    Could you please tell me your account is on Exchange(on-premises) or Exchange Online?

    If the configuration is the following, your Room Mailbox doesn’t allow any conflicts:

    enter image description here

    And I checked your configuration: Yours is no problem, it’s correct.

    Best regards,

    Ivan Wang

    • 0

  2. Is there any progress?

    I found a thread Double Booking calendars, in according to it, you could try to remove the cachings in Outlook.

    (Before performing the method, you could back up these cache files to prevent the loss of data.)

    The document about How to clear the Outlook cache: https://www.lifewire.com/delete-outlooks-add-cache-file-1173820

    Hope it works.

    Have a good day!

    Ivan Wang

    • 0
  3. Best Answer

    Hi,

    In according to your issue, I found a document about Exchange online room mailbox double booking, and you can refer to it:

    https://answers.microsoft.com/en-us/msoffice/forum/all/exchange-online-room-mailbox-double-booking/868faecb-8251-4ac6-b306-f181f4d73a7d

    Hope it helpful!

    Best regards,

    Ivan Wang

    • -1