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Tyler Miller's avatar
Tyler Miller
Brass Contributor
Nov 07, 2017
Solved

Deleting a Room Resource

I am trying to delete a room resource from the O365 Admin Portal and I get this error: Object reference not set to an instance of an object.   I also went into the Exchange Admin and tried...
exchange
office 365
  • Jim Rice's avatar
    Jim Rice
    Dec 14, 2017

    Hi,

    I had the same problem, but was able to resolve the issue by removing the "user" email account associated with the conference room.  Afterwards, the conference room resources were automatically deleted.  Some credit goes to Galib Anwar as well, as their idea pointed me in this direction.  

Jim Rice's avatar
Jim Rice
Brass Contributor
Dec 14, 2017

Hi,

I had the same problem, but was able to resolve the issue by removing the "user" email account associated with the conference room.  Afterwards, the conference room resources were automatically deleted.  Some credit goes to Galib Anwar as well, as their idea pointed me in this direction.  

  • Tyler Miller's avatar
    Tyler Miller
    Brass Contributor
    Dec 14, 2017

    Jim,

    Thanks! I went into Users, and then deleted the room resource user, and the room resource disappeared. 

  • Giovanni Francesco Solone's avatar
    Giovanni Francesco Solone
    Copper Contributor
    Dec 14, 2017

    Hi Jim. In the meantime I solved the problem with Microsoft Support.

    And yes, the work-around consists in the deletion of the original Msoluser associated to mailbox. I translate this into PowerShell snippet:

     

    Remove-MsolUser -UserPrincipalName "sharedmailbox@contoso.com"

    Wait about a minute, then search for the deleted mailbox:

     

    Get-Mailbox -SoftDeletedMailbox

    If You want to remove the mailbox from the recycle bin, You can grep the ExternalDirectoryObjectId associated to deleted mailbox:

     

    Get-Mailbox -SoftDeletedMailbox | where {$_.Name -like "Shared Mailbox Name"} | ft ExternalDirectoryObjectId
Get-MsolUser -ReturnDeletedUsers -objectid "Insert here the ExternalDirectoryObjectId of the Shared Mailbox" | Remove-Msoluser -RemoveFromRecycleBin -Force

    You can anyway restore the mailbox for the next 30 days following this TechNet document: https://technet.microsoft.com/library/dn186233(v=exchg.150).aspx

     

    That's all folks! :-)

    Ciao!

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