Exchange Server 2010 Room Mailboxes Double Booking

We are have several room mailboxes setup on Exchange Server 2010 and are having an issue with rooms being double booked.
I have "Allow Conflicting Meeting Requests" unchecked on the Resource Policy Tab but if a user try's to book a room that is already reserved it gets accepted and put on the calendar.
How do I stop this from happening?
Here are the settings for the room:
AutomateProcessing                  : AutoAccept
AllowConflicts                      : False
BookingWindowInDays                 : 365
MaximumDurationInMinutes            : 1440
AllowRecurringMeetings              : True
EnforceSchedulingHorizon            : True
ScheduleOnlyDuringWorkHours         : False
ConflictPercentageAllowed           : 0
MaximumConflictInstances            : 0
ForwardRequestsToDelegates          : True
DeleteAttachments                   : True
DeleteComments                      : False
RemovePrivateProperty               : True
DeleteSubject                       : False
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                      : gsc.local/Users/Board Room
Identity                            : gsc.local/Users/Board Room
IsValid                             : True

The most common cause of this issue is that you have both Outlook Direct Booking and AutoAccept enabled. To fix this logon to the Mailbox using Outlook and disable direct booking see (or use a script) http://blogs.technet.com/b/exchange/archive/2013/07/15/a-significant-update-to-remove-directbooking-script-is-now-available.aspx
and http://blogs.technet.com/b/mohammad_qassim/archive/2011/05/22/meeting-rooms-double-booking-in-exchange-2007.aspx
Cheers
Glen

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Having done everything depicted in Exchange Server 2010 MP I still have trouble with some Exchange services - they are in not monitored state (five days passed):
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Hi There,
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http://mikecrowley.wordpress.com/2010/12/09/converting-a-mailbox-to-a-mailuser-and-not-loosing-attributes/
Note: Microsoft is providing this information as a convenience to you. The site is not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any information found there. Please make sure that
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Exchange 2010 resource mailbox double booking issue..

Hi,
I have moved the meeting room mailbox from exchange 2003 to 2010:
set-Mailbox -Identity:<resourcename> -Type:Room
but after that, the meeting room can be double booking in the same time.
I have tried folllowing command, but it's failded.
Set-CalendarProcessing -Identity <mailbox identity> -AllowConflicts:$false
Thanks.

Hi Martina,
I appreciate this is an old post, however if you do pick up on this could you please advise on your statement from the above:
"Even if the room sends a Decline, as it should when a conflict is found, you will still see that meeting request in your own Calendar."
This is the exact behaviour happening at a customer of ours at the moment. However they don't want the meeting requests to appear/remain in the Calendar of the person trying to book the meeting room.
Do you know of a way to stop this behaviour?
Do you know if the meeting request is only populated in the Calendar of the user who tries to book an appointment in the resource calendar or does this appear in other perspective attendees Calendars?
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MEllis

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Since upgrading to Exchange 2013 we have noticed a significant increase in users complaining about room double bookings. After a fair bit of testing we were able to narrow the behaviour down to a reproducible scenario.
First things first - we have AllowConflicts set to false on all room and resource mailboxes, so that is not the issue.
The problem manifests if the start date of a recurring meeting series is more than six months in the past.
This is the scenario which we can reproduce:
Find (or create) a meeting room which is configured to not allow booking conflicts (AllowConflicts:False)
Book one or more meetings in the room (or look for existing meetings)
Create a recurring meeting (or use an existing meeting)
with a start date which is more than six months in the past which will conflict with one or more of the bookings created or found in step 2.
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A variation of the scenario is to extend an existing recurring meeting series:
Find (or create) a meeting room which is configured to not allow booking conflicts (AllowConflicts:False)
Find (or create) a recurring meeting with a start date which is more than six months in the past
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Book one or more meetings in the room in the same time slot as the recurring meeting
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Extend the recurring meeting from step 2 past the meetings from step 3.
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This is new behaviour in Exchange 2013 - in Exchange 2010 these scenarios worked and Exchange didn't allow double bookings.
We opened a case with Microsoft and were eventually told that this new behaviour is 'by design'. We even appealed to the customer advocacy group and the Exchange product team still refuse to acknowledge this as a bug. As a workaround it
was suggested that we reduce the booking window horizon to 180 days, but this does not resolve the issue.
We are not happy; our users are not happy.
I'm posting here to share our findings with other Exchange users who may be seeing this issue, and to ask you to please share your experience and, if possible, contact Microsoft so that the product group might reconsider their position on this behaviour.
Ben Lye

So it seems like I should have been a little clearer - the scenarios above are for reproduction. I know that nobody normally creates a recurring meeting with the start date in the past - that step was just to emulate an existing meeting which was created
more than six months ago.
The current explanation from Microsoft is that Exchange 2013 only checks the first six months of a recurring meeting series for conflicts, so another way to encounter (or reproduce) this issue is this:
Find (or create) a meeting room which is configured to not allow booking conflicts (AllowConflicts:False)
Book a new recurring meeting which starts today and has an end date at least six months in the future.
Create a new single meeting instance in the same time slot as the recurring meeting, but after the end of the recurring meeting series.
Extend the meeting series beyond the date of the single meeting instance
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Ben

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As suggested by geo try to clean all the DB's first
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Get-Mailbox -Database 'DBNAME'| New-MoveRequest -TargetDatabase DBNAME -BatchName "BATCHNAME" -BadItemLimit 100 -AcceptLargeDataLoss -MRSserver CAS server FQDN Good Luck !!Please mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you.
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Hi,alexchy8
We can make use of 2 PowerShell commands to achieve this goal.
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Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety,
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Weird issue with Exchange 2010 Room Mailboxes - allows multiple booking of the created meeting rooms

Hi,
we are facing weird issue with Exchange 2010 Room Mailboxes
it allows multiple booking of the created meeting rooms.Sometime we are not getting acceptance or declined mail but and we could see our meetings has been booked at slot.
for e.g.
User A booked room1 with weekly recurrence for time 4pm to 5pm., and User B made his booking other day,without realizing that user A meeting is exists.
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please sahre guidelines if anyone known to this issue.
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Hi,
Just add more in this issue, following testing is done.
referring results and conclusion, you will get better view on issue
====================
Test Case - 1
User OnCloud/O365 - Pratik Nimbalkar
Email ID - [email protected]
( same as UPN)
Room Booking Scenario - Book Room for 6.30pm to 7.30pm slot
Results - Accepted
Room Booking Scenario for same slot- ReBook Room for 6.30pm to 7.30pm slot
Results - Declined
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==================
Test Case - 2
User OnCloud/O365 - Testsm
Email ID - [email protected]
( different from UPN)
Room Booking Scenario - Rebook Room for 6.30pm to 7.30pm slot
Results - No Response from Room Mailbox neither Accepted nor Declined
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Room Booking Scenario for same slot- Rebook Room for 6.30pm to 7.30pm slot
Results -No Response from Room Mailbox neither Accepted nor Declined
But we can see as booked as "Tentative"
=========================
Conclusion = There is issue with booking room and not getting response while user is
@abc.my id.
======================
Note = for all other on premise users those are having @abc.co.in
and @abc.my it is working fine. Users are getting respective correct reply from room mailboxes.
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Are you sure you did that right ... because I did a File/Backup Address Book, and the file named included the date. I then copied the file through our Airport network from the Powerbook to a new iMac. The opening Address Book on the iMac, I did a File/Revert to Address Book Backup, which allows you to choose the file. Now the iMac had the same Address Book file as the Powerbook. This looks to me to be the same thing you are trying to do.

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[05/03/2013 21:58:09.0090] [1] Executing:
$wevtutil= join-path (join-path $env:SystemRoot system32) wevtutil.exe;
$manifestPath = [System.IO.Path]::Combine($RoleInstallPath, "Scripts\TSCrimsonManifest.man");
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[05/03/2013 21:58:09.0105] [2] Beginning processing Start-SetupProcess -Name:'C:\Windows\system32\wevtutil.exe' -Args:'im "C:\Program Files\Microsoft\Exchange Server\V14\Scripts\TSCrimsonManifest.man" '
[05/03/2013 21:58:09.0276] [2] Starting: C:\Windows\system32\wevtutil.exe with arguments: im "C:\Program Files\Microsoft\Exchange Server\V14\Scripts\TSCrimsonManifest.man"
[05/03/2013 21:58:09.0344] [2] Process standard output:
[05/03/2013 21:58:09.0344] [2] Process standard error: The value for channel property Type contains an invalid value. The parameter is incorrect.
[05/03/2013 21:58:09.0347] [2] [ERROR] Unexpected Error
[05/03/2013 21:58:09.0347] [2] [ERROR] Process execution failed with exit code 87.
[05/03/2013 21:58:09.0350] [2] Ending processing Start-SetupProcess
[05/03/2013 21:58:09.0350] [1] The following 1 error(s) occurred during task execution:
[05/03/2013 21:58:09.0350] [1] 0. ErrorRecord: Process execution failed with exit code 87.
[05/03/2013 21:58:09.0350] [1] 0. ErrorRecord: Microsoft.Exchange.Configuration.Tasks.TaskException: Process execution failed with exit code 87.
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[05/03/2013 21:58:09.0351] [1] [ERROR] Process execution failed with exit code 87.
[05/03/2013 21:58:09.0351] [1] [ERROR-REFERENCE] Id=MailboxComponent___13A8A6B7DE0A4fe3BEB5CB1D86105DA3 Component=EXCHANGE14:\Current\Release\PIM Storage\Content Indexing
[05/03/2013 21:58:09.0351] [1] Setup is stopping now because of one or more critical errors.
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Matt

Error 87 -with these details below - and a fix. The situation that got me here by the way was an incomplete install that was uninstalled, then installed again.
[02/24/2014 06:49:06.0967] [2] Active Directory session settings for 'Start-SetupProcess' are: View Entire Forest: 'True', Configuration Domain Controller: 'xxxxxxxxxxxxxxx', Preferred Global Catalog: 'xxxxxxxxxxxxxxxxxxxxxxxx', Preferred Domain Controllers:
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[02/24/2014 06:49:06.0967] [2] Beginning processing Start-SetupProcess -Name:'C:\Windows\system32\wevtutil.exe' -Args:'im "C:\Program Files\Microsoft\Exchange Server\V14\Scripts\TSCrimsonManifest.man" '
[02/24/2014 06:49:06.0967] [2] Starting: C:\Windows\system32\wevtutil.exe with arguments: im "C:\Program Files\Microsoft\Exchange Server\V14\Scripts\TSCrimsonManifest.man"
[02/24/2014 06:49:07.0592] [2] Process standard output:
[02/24/2014 06:49:07.0592] [2] Process standard error: The value for channel property Type contains an invalid value. The parameter is incorrect.
[02/24/2014 06:49:07.0592] [2] [ERROR] Unexpected Error
[02/24/2014 06:49:07.0592] [2] [ERROR] Process execution failed with exit code 87.
[02/24/2014 06:49:07.0592] [2] Ending processing Start-SetupProcess
[02/24/2014 06:49:07.0592] [1] The following 1 error(s) occurred during task execution:
[02/24/2014 06:49:07.0592] [1] 0. ErrorRecord: Process execution failed with exit code 87.
[02/24/2014 06:49:07.0592] [1] 0. ErrorRecord: Microsoft.Exchange.Configuration.Tasks.TaskException: Process execution failed with exit code 87.
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[02/24/2014 06:49:07.0608] [1] [ERROR] Process execution failed with exit code 87.
I found I could fix this by removing the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\eventlog\Microsoft-Exchange-Troubleshooters/Operational
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After 24 hours I'll try post again - giving things time to make sure they are actually working.

Use Different mailbox or same mailbox if setup two accepted domains in one Exchange Server 2010

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I want to know if I setup two accepted domain in one Exchange Server 2010, will it have another mailbox or use same mailbox?

Hi,
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Recover mailbox from Exchange server 2010 information store to exchange server 2013

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Well if your AD is messed up that leaves you in a jam for sure because;
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2. As Ed said you should build a new Exchange 2010 server and use portability but it has to be in the same organization.
3. Here is a good article on how to accomplish
http://exchangeserverpro.com/exchange-2010-database-portability-disaster-recovery/
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The only other thing you could consider is to restore your AD from a previous point in time, however BE VERY CAREFUL if you consider this since it could cause more issues then you have now.
BTW if you AD is messed up, where are you putting this new 2013 server?
Search, Recover, & Extract Mailboxes, Folders, & Email Items from Offline Exchange Mailbox and Public Folder EDB's and Live Exchange Servers or Import/Migrate direct from Offline EDB to Any Production Exchange Server, even cross version i.e. 2003 -->
2007 --> 2010 --> 2013 with Lucid8's
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Hi,
i have problem with Outlook Uses who have Full Access on other mailbox.
An authentication window pop up very time a user start Outlook.
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1. Active Directory Does not exist and can't be Concatenated.
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Hi,
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