Exchange Server 2010 Room Mailboxes Step by Step Guide

Exchange Server 2010 has several different types of mailboxes that can be created.  In this tutorial we’ll explore the purpose of a Room Mailbox in Exchange Server 2010, how to create a Room Mailbox, and look at different ways to configure a Room Mailbox to suit different scenarios.

Exchange Server 2010 Room Mailbox Overview

A Room Mailbox is a special type of mailbox that is assigned to a fixed location such as a meeting space, conference room, or training facility.

Room Mailboxes are fundamentally the same as regular User Mailboxes. They consist of a user account in Active Directory and an associated mailbox in Exchange Server 2010.  However when you create a Room Mailbox using Exchange Server 2010 the user account password is generated automatically by Exchange, and the user account is disabled by default so that it can’t be used for interactive logons.

In addition, the Room Mailbox has extra attributes exposed via the Exchange Management Console that can be used for automated processing of bookings and other configurations that suit this type of mailbox.  We’ll look more closely at these later in this article.

Creating a New Room Mailbox in Exchange Server 2010

Open the Exchange Management Console and navigate to Recipient Configuration -> Mailboxes, and start the New Mailbox Wizard.

Exchange Server 2010 New Mailbox Wizard
Exchange Server 2010 New Mailbox Wizard

Select Room Mailbox as the mailbox type to create.

Choose to Create a Room Mailbox
Choose to Create a Room Mailbox

Select New User to create a new user account for the Room Mailbox.

Choose to Create a New User for the Room Mailbox
Choose to Create a New User for the Room Mailbox

Select an organizational unit and fill out the user information for the new Room Mailbox.

Enter User Information for the New Room Mailbox
Enter User Information for the New Room Mailbox

Change the alias if necessary and complete any of the other optional settings that are required in your environment.

Choose an Alias and Configure Optional Settings if required
Choose an Alias and Configure Optional Settings if required

When you are happy with the settings you’ve chosen click New to create the Room Mailbox.

Complete the New Room Mailbox Wizard
Complete the New Room Mailbox Wizard

Now that the new Room Mailbox has been created you might notice a few things about it.  Firstly, it appears as a different type of mailbox in the Exchange Management Console.

Exchange Server 2010 Room Mailboxes in Exchange Management Console
Exchange Server 2010 Room Mailboxes in Exchange Management Console

You can also see that the associated user account is disabled.

Disabled User Account associated with an Exchange Server 2010 Room Mailbox
Disabled User Account associated with an Exchange Server 2010 Room Mailbox

And the Room Mailbox also appears in the Room Mailboxes address list.

Exchange Server 2010 Room Mailbox Address List
Exchange Server 2010 Room Mailbox Address List

Configuring Exchange Server 2010 Room Mailboxes

When you open the properties of a Room Mailbox you’ll notice some additional tabs that do not appear for normal User Mailboxes.

Exchange Server 2010 Room Mailbox Properties
Exchange Server 2010 Room Mailbox Properties

These additional options let you configure the Room Mailbox in different ways, such as:

  • Whether meeting requests are automatically accepted by the Room Mailbox
  • How the Room Mailbox handles conflicting appointments
  • The maximum length of time a meeting can book out the room
  • How far into the future a room booking can be made

These options make sense under different scenarios.  For example:

  • A small, general meeting room is suitable for auto-acceptance of meeting requests, but due to the number of people who may want to use the room only a maximum of 1 hour can be booked at a time
  • An executive boardroom would not auto-accept room bookings, but instead be managed by an executive assistant to make sure it is always available for meeting with important visitors
  • A training room would permit all day bookings to faciliate training classes

Lets take a closer look at how we would configure a Room Mailbox to automatically accept bookings.

Configure the Room Mailbox Auto-Attendant

On the Resource General tab of the Room Mailbox properties enable the Resource Booking Attendant option.

Enable Room Booking Attendant on Exchange Server 2010 Room Mailboxes
Enable Room Booking Attendant on Exchange Server 2010 Room Mailboxes

This can also be performed using the Exchange Management Shell.

[PS] C:\>Set-CalendarProcessing "Conference Room 1" -AutomateProcessing AutoAccept

When Alan Reid books the meeting room for an available time he receives an automatic acceptance from the Room Mailbox.

Exchange Server 2010 Room Mailbox Auto-Acceptance Message
Exchange Server 2010 Room Mailbox Auto-Acceptance Message

Configure the Room Mailbox Delegate

In this example a delegate is configured who can manage scheduling for the Room Mailbox.  In the Resource Policy tab of the mailbox properties click Add and select the user who is to become a delegate of the Room Mailbox.

Exchange Server 2010 Room Mailbox Delegates
Exchange Server 2010 Room Mailbox Delegates

Delegates also need Editor access to the calendar and free/busy folder of the mailbox itself so that they can manage meeting requests.  There are two ways to achieve this:

  1. Grant an administrator Full Access Permissions to the Room Mailbox, open it in Outlook, and edit the Calendar and Mailbox permissions.
  2. Grant the delegate Full Access Permissions to the Room Mailbox

In this example I will use option #2.

[PS] C:\>Add-MailboxPermission -Identity "Conference Room 1" -User Alex.Heyne -AccessRights FullAccess

The delegate Alex Heyne can now manage room bookings. In this example a meeting is still unconfirmed waiting for Alex to approve or reject it.

Delegate Management of Room Mailbox Bookings in Exchange Server 2010
Delegate Management of Room Mailbox Bookings in Exchange Server 2010

After Alex approves the meeting the organizer (Alan Reid) receives a message confirming acceptance.


As you can see Room Mailboxes are a very useful feature of Exchange Server 2010 and can be configured to suit any organizational requirement for managing availability and booking meeting requests.

FAQs and Common Issues

Q: The problem with Room Resource booking is that you need to invite all rooms to see availability for a meeting. Then, when you have decided upon a time and room, you need to remove the rooms you don’t require.

A: Look at using a Room List to simplify the process of finding available rooms for meetings.

Q: How do you enable other users to see who owns an existing booking in a resource mailbox?

A: Check out how to show full free/busy details for room and resource mailboxes.

Q: Can room mailboxes be restricted so that only certain people can send to them?

A: Yes they can. See this post for details.




  1. Jason T. says

    Awesome write-up. I would just like to also see how everyone can see the current availability of the room in calendar format.

    • Dave says

      im using outlook 2013,
      in calenders: right click on “my calenders”. Go to add calender, select “from room list”.
      Choose your calender, then add.

      • Dave says

        I also found, if you click “open calendar” from the ribbon at the top and select room list, and add you room, it will add it as it own tab named “rooms” instead of falling under “may calendars”. I prefer this method.

  2. Chreag says

    The room booking stuff is fine up to the point where people start doing All Day meetings.

    If it clashes you don’t get any email back letting you know that the meeting couldn’t be created.
    The default for all day events is to set the status to Free rather than Busy which has led to loads of accidental double bookings. There is no way to change the default and people don’t alway remember to set it to Busy.
    If you set the maximum meeting length to less than 1440 minutes (i.e. all day) in order to stop people making all day events and someone tries to create one then no appointment is made, but no email is sent letting the user know this.

    Are there any cures for this becuase it is causing us problems?

  3. Tal says


    I have create room according to this guide, but unfortunately users that are not in Organization Management; Recipient Management or Domain admins are not getting back accept from the room, (all other getting).

    The reservation request are getting to the inbox of the room but not proceed except of the privileged.
    What have I done wrong?

  4. Craig Roberts says


    Write up is great and helped a lot to clarify what I was doing.

    The problem with Room Resource booking is that you need to invite all rooms to see availability for a meeting. Then, when you have decided upon a time and room, you need to remove the rooms you don’t require. This is bit effort.

    Also, it doesn’t work as well on Outlook for Mac, but that is just OFM, not Exchange.


  5. Andrew says

    How do you stop the “automatic acceptance” emails from being sent out after creating a meeting? Users are complaining these are annoying…


  6. Brady says

    Great explanation. Is there a way to automatically change availability of a non-booked resource as the given time draws near. For example, if a person is used as a resource, they may be happy to auto accept bookings, but they might not notice if someone books them five minutes ahead of time. Maybe a rule that says change available times occuring in the next hour to busy.

    Thanks for any suggestions – I have a staff member who insists on only taking bookings by personal email because the trouble this can cause.

  7. Brandon says

    Is it possible to configure the room resources via command line or powershell? We utilize MSOnline as our exchange server so we don’t have access to the GUI to get to the resource information/general/policy tabs highlighted in yellow above. We have a double booking issue that seems to occur when ppl create an appointment but don’t invite the room as a resource causing a double booking issue, conversely I would like to disable users direct booking on the room calenders and want to turn that ability off so they can only book via their own calenders.

  8. Adam Claypool says

    Has anyone seen the issue where the auto acceptance e-mail that is generated works except when the room is reserved from Outlook 2010. Outlook 2007 I get an auto-generated e-mail with the customized text. If I reserve the room through OWA I get the e-mail. However, anytime I reserve the room from Outlook 2010 no message is received.


    • says

      Never heard of that problem before. Is there anything else that might be a factor? Eg does it only impact room mailboxes that were created before you rolled out Exchange 2010?

  9. Patricio says

    Hola, donde es que se ve la cuenta desactivada?? yo eso no lo encuentro incluso configure la delegacion, y tampoco le llega nada a la persona que esta como delegada de esa sala cuando yo le creo una reunion

    agradezco su ayuda

    • says

      Hi Patricio, according to Google Translate your question is:

      “Hello, where is that account is disabled? I find it’s not even configure the delegation, and there comes nothing to the person you are as a delegate in that room when I think a reunion”

      But I’m sorry, I still don’t understand what you’re asking.

      • JULIO says

        Hi Paul, lost in tranaslation ( Patricio is asking )

        Hi, Where exactly do you see the disabled AD account, I can’t find it and I even configured the Delegation, the person that I have allowed delegation rights doesn’t get a notification from the room resource once I set up delegation.
        Thanks for your help

        ( Julio here, even translating Patricio’s question is confussing as he starts asking about the disabled ad account which is clearly showing on your tutorial then he jumps onto setting up delegation for the room resource and the ‘user’ not getting the room notifications… which is also quite clearly explained in your tutorial )

  10. Keith says

    Have a weird issue — my BlackBerry cannot view the free/busy info on the Room Mailbox, all other Mailboxes are ok. Are the free/busy Calendar rights different on a Room Mailbox VS. a normal User Mailbox ? I see some other people have come across this issue but haven’t been able to find a fix yet.

      • Keith says

        Update — could have been a corrupted MAPI profile on the BES server. I re-created the MAPI profile on the BES server, re-started the BES services and bingo — free/busy info was now showing on the BlackBerry devices. :-)

  11. Asem says

    as a normal user how i can know who reserving the room ,because all what we see is the room is busy from 1:00 Pm to 2:00 Pm , but we don’t know who is reserving the room .
    can you help us ?

    • Keith says

      The default free/busy Calendar settings on the Room Mailbox are set to: Free/Busy Time
      If you log into the Room Mailbox via Outlook and change the Calendar settings to: Free/Busy Time, Subject, Location — you will be able to view the user who reserved the room.

      Hope that helps. :-)

      • hervé says


        I try to display the organizer’s name on the ressource calendar, without succes.
        I checked the box in the” ressource information” tab: “add organizer name to the subject”, but nothing appears.

        I also try through OWA but could not find the good option.

        thanks for help

  12. Jeremy says


    I am configuring equipment resource calendars in an attempt to have resource requests sent to me, or ideally our spiceworks ticket system. The forwarding is on and a delegate is specified, however it does not show up in any inbox but the resources (it is specified to go to both). Has anyone else had this issue?

  13. says

    I am trying to find a way in Exchange 2010 to have room or resource/equipment reservations to automatically generate a 4 digit participant code/password to include in the invites – or “worst case scenario” ..ONLY generate and inform the organiser about the generated code – with the accepted booking confirmation.
    This way I would be able to let Exchange decide the meeting password for ad-hoc conferences in both my video conference MCU’s and smaller and separate PBX audio MCU’s
    In this way I would have the same booking procedure for both.

    I am not really happy to use snap-ins, or add-ons in the Outlook client.

    I have been googling for days now, but cannot find even others asking a similar question ….am I missing something?
    Do you have any ideas if what I am looking for is available in Exchange 2010?


    • says

      Hi Martin, I don’t think you’ll find that natively in Exchange. Lync might provide some of that though, otherwise it would have to be something developed to hook into Exchange via the EWS APIs I guess.

  14. Jim says

    I have this situation. The rooms are setup to auto accept request but the users that are invited are getting an email for the meeting which says “No action is required”. The email is then auto deleted and the meeting is added to the user’s calendar but in the tentative status. The user then has to go into the meeting on his calendar to accept, decline etc.


  15. Jim says


    Sorry I didn’t give you the whole story and I checked those settings first. The end user gets an invite from a delegate and it shows up fine and they have the choice to respond. Same end user gets meeting request from same delegate but with a meeting room (resource) added and they get the ‘No action required’ meeting request that deletes itself leaving the meeting on the end users calendar as tentative.

    Hope that’s clear. Maybe you can point me to something that explains the resource settings in greater detail?


  16. tolinrome says

    Although I enabled the Set-CalendarProcessing “Conference Room 1” -AutomateProcessing AutoAccept on the roommailboxes, nobody is receiving automatic acceptance from the room mailbox, when I first set this up I did receive an automatic acceptance but not anymore. I also checked in the EMC and the box is checked to receive these emails. Thanks!

  17. Kyle says

    Hi All,

    Im desperately trying to get outlook to NOT let meeting invites go out if the meeting room selected for use is already booked. It causes a nightmare of phone calls and confusion when everyone gets invited to a meeting room, the organiser is notified by reply mail that the room has declind the invite but everyone else is still invited to that room and the organiser doesnt go back and ammend the original booking to another meeting room that is available.

    Idealy I want outlook to popup and say that the room is booked and the invite cant be sent. then they can change it and click send and then it will accept it.

    SURELY this is possible! we have exchange 2010 and mostly outlook 2010 clients but still quite a few outlook 2007 clients…

    PLEASE HELP…Im dying here

    • Mike says

      Have found no way to prevent invitees getting the meeting if the resource is not available through Resource booking Attendant. Only using direct booking, which of course causes a whole other set of issues.

    • Abdullah says

      Hi Kyle
      Just wanted to ask you whether you were able to get a solution for your problem. I have the same issue here. Need to prevent the sender if the resource mailbox is booked and the AutomateProcessing is set “AutoAccept”.

  18. says

    I currently have shared calendars in exchange 2003 that i need to migrate all the information to a room in exchange 2010 enviroment , is there a simple way of doing this?? i have not found any post anywhere and i know that there has to be some way of doing it.


    • Charlie says

      After you move the mailbox, use the EMS to change the “type” – the command looks something like:

      Set-mailbox -Identity “” -Type “”
      I’ve successfully changed a migrated mailbox from “shared” type to “Room” type using this format. Knowing this, it should be possible to get creative on the scripting etc if you have a lot of them to do.

      • Charlie says

        Sorry my initial post had the brackets stripped.

        An example script would be:
        Set-mailbox -Identity “CRBusiness1” -Type “Room”
        This will change the type from “shared” to “room”. Room can be replaced with “Equipment” etc.

  19. Janet says

    I’m seeing an issue where requests that are emailed in from external senders do create appointments, however they do not get forwarded to the delegate, even though this is set up to do so. Has anyone else had this problem, or is this a known issue with Exchange 2010 /hosting?


  20. David Watkin says

    Do you know if there is a way to stop accepted meeting room resource requests going into the meeting organiser’s calendar? This is because the PA’s request the meeting rooms on behalf of their bosses but they aren’t going to attend the meeting themselves.

  21. says

    I can see a few people have outstanding/unanswered questions or problems with room mailbox behaviour, so I’m going to do my best to research them all and post the answers if I find them.

  22. Alexander Wallo says


    I was wondering, is there anyway to make only a specific group being able to book a specific conference room? We have mailboxes set up and is working perfectly, but we want only one specific section/unit to be able to book that conference room, is that possible?


  23. Steffen says

    I have a problem with the permission on the new room we made here.
    We are trying to find a way to allow people to book the room, and other can see it but not edit it, but admin will be able to read, book and edit.
    Can anyone please tell me an easy way to fix it?

  24. Dennis says

    I am having the same problem as Steffen,

    I want all of our users to see what and who has the booking of the room in the room calendar. Write now all they see is busy.


  25. Quintin says

    Hi Paul

    I was wondering if you know why when scheduling a series you cannot change a conflicting meeting to a different boardroom, it works when you keep to the same boardroom just a different time slot.

    Quintin Rudman

  26. Leah says

    Can you only manage delegates through the EMC? We are currently migrating to 2010 from Exchange 2003. Previously, our helpdesk staff managed resource calendar delegates through Outlook. But with disabled equipment/room accounts Helpdesk staff will no longer have access to do this, unless I’m missing something? I’ve looking for this setting by ‘managing another user’ in OWA and cannot find it.
    It would be quite inconvenient if Helpdesk staff can no longer manage this, as delegates change quite frequently around here.

  27. says

    I was able to set up the ROOM perfectly. Unfortunately I can not get the details to show, it only shows who booked and not the details? Help!

  28. says

    I have a room calendar set up in Office 365, the calendar accepts appointments fine, but when you look at the appointment in the room calendar it shows the username as the subject, not the original subject of the appointment. How do I fix that, since this information is basically useless the way it is.


  29. ghalib yacoub says


    I have follow your steps of how to allow delagates to accep the meeting,but I need to explain to me how to do the following step by step.


    1.Grant an administrator Full Access Permissions to the Room Mailbox, open it in Outlook, and edit the Calendar and Mailbox permissions.
    2.Grant the delegate Full Access Permissions to the Room Mailbox

  30. Bryan Sycamore says

    This has worked well for us so far. We used to have Public Folders set up for rooms

    Is there any easy way, once the Room is setup that it can be displayed under Public Folders?

    Or is there a better way to do this. Basically just want everyone to be able to find the rooms in the same place that they are used to looking, but with the functionality of being able to ‘Book’ them as rooms


  31. ahmet says

    Hi, this tutorial is very usefull. Thank you very much.

    I want to develop an application that can reach a room-mailbox calendar and list every meeting request to display in a screen.

    I achived of big part of my purpose. with your help.

    I can reach mailbox calendar by using the delagete account. I can list every meeting. at first I cant see the subject, just organizator name as a subject. After a few researches, found a way to disable changing subject.

    the second toruble is I cant see the meeting sensitivity, private meetings look normal, I think there is some solutions for this.

    but all of these changes for room mailbox are not good, I guess.

    maybe these changes can effect some general usage of room mailboxes.

    But I want to ask, what is the best practice of accessing room mailbox calendar. is there any other way, to reach room mailbox without any modifications. for example: ist it possible connect a normal account to a room mailbox? I mean, while requesting a meeting, after selecting room mailbox, the connected mailbox will be added to required attendee list. and I will connect this account that is a copy of room mailbox. and I can reach every detail of mailbox.

    any suggestion ?

  32. Steve says

    IS it possible to set up a custom rule for auto-accept? For example, only auto accept items that have a specific word in the subject line?

  33. Vignesh says

    Hi Paul,

    Is there any way to create room mailboxex using power shell scripts? I need to create about 50+ conference room mail boxes and creating through GUI may consume more time and I don’t see an option to “copy” settings in GUI

  34. PMSLEET says


    I was wondering if a third person (reception) could get an email on every booking done in a room-resource.

    Regards PMSLEET

  35. Ganesh says

    Hi Paul,

    I have setup the Room Mail box as per your instructions.

    Can you please help me on how to disable / deny sending mail if conflict is detected on booking of Outlook resources from Meeting request.

    Currently i get the meeting declined message after the invite is sent.


    Ganesh P

  36. Mohammad says

    when i set it to book automatically it is ok but when not there is a problem
    I chose myself and our secretary as delegates
    we use ex 2010 sp1 and outlook 2010

    when people request a meeting we cannot see it in the calendar (i go to outlook – > calendar and add a calendar (the room’s) but i cannot see their request to accept or deny

    i also set all persons allowed in sending in/out of policy booking requests but no success

  37. Amy says

    Question, we had Exchange 2003 and configured Direct Book Resource rooms. Can I convert those to Exchange 2010 room mailboxes? I need to be able to get the existing bookings from the existing calendars to the new one.

    We already brought the mailboxes over from 2003 to 2010. Users bookings are not booking the rooms, we assume since 2010 Outlook no longer has the code to direct book.

    So, it is as easy as changing the current mailbox to a room mailbox? :) I am sure it isn’t. I have tried to find this via google, but not coming up with my specific scenario.


  38. says

    We use the Outlook Calendar to manage our Daily facility calendar for a HS of approx 3000 students. This includes practices, club meetings, outside rentals and such.

    Havent found a way to effeciently enter events that may require multiple rooms ( upto nearly 100 for some large speech tournaments) along side events that repeat and may need 10 classrooms each time they meet.

    Want to have one entry of an event with multiple rooms that may repeat on a non-regular basis AND to alert if there are room conflicts between events for the same time.

    We may enter information in June for the follwing school year August- June.

    Any suggestions would be appreciated-

  39. nick says

    Is there anyway to configure the “additional text” to appear with formatting (ie Bold and paragraphs). The text I insert into the additional text field appears to remove the line breaks that I put in. For example I put in :
    Paragraph 1 blah blah blah.

    Paragraph 2 blah blah blah.

    I receive the additional text back in the confirmation email as
    Paragraph 1 blah blah blah. Paragraph 2 blah blah blah.

  40. nick says

    nightmare! change () for in the text below

    (p)Paragraph 1 blah blah blah(/p)
    (p)Paragraph 2 (b)with a bit of bold(/b) blah blah blah(/p)

    you can also try: (br) text here (/br) for carriage return

    • Rod says

      Thanks Nick!
      I ended up pasting my Word formatted text to dreamweaver which generated a more or less clean html code for me.
      Your html comment made my day, because prior to finding this post, a wonderful tutorial by the way!, I searched for days in pursuit of changing the “added text” format. No matter what I did it always ate all of my carriage returns (enters). I do not believe Microsoft has this documented – the use of html.

  41. jan says


    Can we share the calender of a room mailbox with an external user in Exchange 2010?

    This user from the other company is not an active directory user and the other company are not using an active directory.

    We would like to give this external user full rights to the calender.

    Any suggestions?

    Thank you in forward!

  42. James says

    Is any way to disable ActiveSync in the policy? I know you can just go into the properties of the room and disable it, but the team that creates the rooms would like to see if we can have the policy set that way. Also, my company wants is disable on all rooms.


  43. Billy Shepherd says

    Hi Paul:

    Do you know if it is possible with Exchange 2010 to create a Resource and have all accepted meetings trigger an email to a group outside of the listed delegates. We have mobile ATM’s that can be reserved by any of our bank locations for community events; however, our maintenance guys (who are not delegates) have to tow the ATM to the needed event. So what we’d like to happen is to have an email sent to the maintenance group when a delegate of that resource accepts a request for the mobile ATM. I’ve looked in Calendar settings and resource properties, but not seeing what we need.

    Any input is greatly appreciated.


  44. Tony Holdgate says

    Ive followed these instructions to the letter but cannot get the room lists to show up in Room Finder – cached or online mode. Rooms are all set as resourcetype room and distribution group shows as room list. Pure Exchange 2010 with Outlook 2010 clients. They were created weeks ago and I’ve forced an OAB update. Any ideas where to start looking?

  45. Christopher Adams says


    Thank you for the clear and thorough explanation. I was already on this path. However, on completion of the settings for the Room Mailbox/Calendar, a non-privileged user can still add an appointment to the calendar. Here are the steps that I took:

    Create the Room Mailbox in EMC
    Add a delegate to do any approvals
    Login to OWA with my account and then open the new room account.
    Allow automatic approval
    Modify setttings so that only the delegate has scheduling permissions.

    What am I missing?

  46. Paul Kirk says

    Thanks for the step by step instructions they work great, I just need to know how I can automatically add the calendar of the new room/resources mailbox(s) to all my OWA users without them having to add the shared calendar(s) manually (I have created 6). Is there a way of sending an invite to all OWA users either via shell or by logging into the mailbox of the room/resource?? I tried to logging in but got an error even though I have Full Admin rights.

    Any advise would be great.



      • Paul Kirk says

        In order for people to see at a glance the availalbitiy of a room/resourse before trying to make a booking. I’m implementing this at a school and the rooms are timetabled, so only a few free slots per room…it can be difficult to see available slots when viewing via the ‘New Meeting’ window due to limited info shown. I just thought that seemed the most obious way for users to get an overview of the bookings. Are there other ways of achieving the same thing?

        • says

          I see. Maybe take a look at room lists to see if that helps. I’ve also seen users who will dump a bunch of rooms into the meeting request and then remove any that don’t have a free slot they want.

        • Paul Kirk says

          I did try the room list , and putting all available room/recourse into a request, but it can be a little confusing for the users, especially as the meeting request window doesn’t show any detail of the busy time in this view. When I followed your other post to show full/busy detail it only shows in OWA when viewing the full calendar, hense why I ended up asking how to invite or to automatically add the calendar for each room/resource to all users own Calendar view simply to give the user the detail they require.

  47. Paul Kirk says

    OK thanks for all your input, at least I wont waste anymore time looking for the solution that isn’t there.



  48. Gr says


    First i wnat to thank you for your detailed guide. Also let me ay sorry, that i have a followup to a post, that has been posted a Long time ago. but:

    We have an Exchange 2010 room Mailbox representing a parkin lot for 3 individual parking spaces. Is there a way to auto accept up to three slots in that Mailbox and decline the 4th conflicting booking?
    resource capacity and conflicting instances have no effect on that.
    I can either allow any conflicting requests, or none (so the users always have to check whether one of the 3 parking slots is available)
    do you have any hint for me?


  49. Chad says

    Labs Calendars are not accepting Appointments.

    After much investigation I discovered there were Messages “Stuck” in the InBox of the PJMLab2 User/Room after clearing those it seems to work now.

    There appears to be users sending e-mails directly to the Room Mailbox. The Booking Assistant is unable to handle theses.

    Is there a way to keep Messages from being recieved while Appointments/meetings are?

  50. Dave Mc says

    We are using a Room Calendar to track employee’s vacations & work-related trips by creating a meeting and adding “Master Calendar”. Multi-day events are marked as Free, so the days aren’t grayed out by the full day events, but the Master Calendar auto-converts them to Busy, thus graying out the days. Is there a way to turn this off? Yes, we can go in & change them once they are in the room calendar, but it is an extra step we’d like to avoid. Thanks in advance…

  51. John says

    We are running Exchange 2010 SP3 with Outlook 2007 SP3. All the users, including the Meeting Rooms are set in Cached Mode.

    Every now and then the auto attendant DECLINES the meeting the user is attempting to book, stating that the requested meeting schedule conflicts with ITSELF!

    Any idea’s on what could cause this? Perhaps change the Resource Meeting Room mailbox to online mode???

    BTW: The room at the time is free, there are no conflicting requests, and the requests are not reoccurring.



  52. mohammad says

    Dear Paul
    Thanks for such of value information.
    My colleague enable one of our equipment account and set password as well ” this after restore from delete ”
    now I am try to access this equipment account with no chance and all other employees who have this mailbox folder also complain that they unable to check the emails for this equipment mail box.
    there is any way to rest the system password .
    I try to disable the account but problem still valid , kindly advise.

  53. Sean says

    Hi Paul.

    Great, informative site.

    I have a resource calendar where a user has edited and changed a series of bookings, but when they changed the series it blew away the individual occurrences that were specifically edited (they change the occurrence in the series to add in interviewee details). The manager wants the calendar restored to before the edit happened.

    I have a backup of Exchange 2010 that I have restored from before the edit date, I can mount it, and using get-MailboxStatistics I can see the Room Mailbox in question. However when I do “[PS] C:\Windows\system32>restore-mailbox -identity interview1 -recoverydatabase RDB1 -contentkeywords “Emergenc
    y” -includefolders \Calendar -allowduplicates” I get no change in the calendar items of the Room.

    Is it not possible to recover Room mailbox calendar items, or am I missing something?

    This is a SBS 2011 Standard environment.



  54. Mykul says

    I guess I must be doing something wrong or just simply overlooking a configuration step. I setup everything but I do not see the rooms I created when I look at the OWA Address Book like in the picture above. If I go into the Address Book in Outlook 2013 I see the rooms that I created. But if I go to the calendar to create a meeting the Room Finder doesn’t list any of the rooms.

    Am I overlooking something? More coffee.

  55. Gene says

    Is there a way to prevent booking more than one room resource on the same event. I have users using the sched attendant in Exchange 2010 to find rooms that are avail for that time period and picking 5 or so rooms. My fear is that they will forget to uncheck the rooms the do not want and book more than one room for a event. I hope that makes since.

  56. Phil says

    Hi Paul
    Is there a way of reporting all the double booked rooms? We had a problem with double booked rooms and want to search for all the doubles ahead of time

  57. Andy Zook says

    Paul, I have a room mailbox/calendar. Is there a way to set the calender permissions to allow viewing of the calendar by users in general, but not allow direct booking to the calendar except by the one person delgated to approve/reject such requests. I want users to send meeting requests to the calendar where a designated user would receive them and accept or reject them before hitting the calendar. Is this possible?

  58. Alex Habib says

    I truly admire the author for his valuable contributions.

    We have AD two-way forest trust between two domains with free/busy configured using Availability Service for Cross-Forest. When users from the trusted domain make a meeting request, the booking is processed however notification for confirmation/decline is NOT being sent. Notification are only sent to users in the same domain.

    Is there a way to resolve this issue?

  59. John says


    Can we enable both MAILBOX AUTO-ATTENDANT and a MAILBOX DELEGATE for meeting rooms?

    I ask because we want to use the auto-attendant but ultimately want to allow the mailbox delegate to have control over the rooms in case the meetings need to me moved around.



  60. Sandip Amin says

    In o365 can we have the permission set on meeting rooms such that everyone is able to see the organizer of the meeting when they see this meeting under scheduling assistant.

    Thanks, Sandip Amin

  61. Ewoud de Jong says

    We have set limited rights on some of our meeting rooms. A few people should be able to reserve some meeting rooms. We succeeded in that, but someone with no rights is still able to select the room from the room list. When he books the room, he receives an email that the booking has been rejected.

    Is it possible to show the restricted meeting rooms only for granted users?
    Is it otherwise possible to adjust the mailmessage with the rejection? I’d like to explain to the requestor why the rejection took place and how to handle further.

  62. Kelley says

    Our meeting room is frequently used by executives for HR related meetings. These meeting requests has confidential information. The privacy options (delete attachments, delete subject, etc) seem to only apply to what is placed on the resource calendar AFTER the meeting is approved by the delegates. The problem is that the delegates can see all the information (including attachments) on the meeting request itself. Is there a way to solve this problem?

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