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...

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office 365

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

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.

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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Deleting a Room Resource

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