Delete SchedulingMailbox

Question

I am trying to delete SchedulingMailbox by powershell (booking calendar made before 2017). But it gives an error:

An Azure Active Directory call was made to keep object in sync between Azure Active Directory and Exchange Online. Howe

ver, it failed. Detailed error message:

    Resource '81977292-1b97-4844-b947-c6329c725236' does not exist or one of its queried reference-property objects are no 

t present. DualWrite (Graph) RequestId: f269bd69-471c-4d2f-af2a-7a271642a58d

The issue may be transient and please retry a couple of minutes later. If issue persists, please see exception members

for more information.

+ CategoryInfo          : NotSpecified: (:) [Remove-Mailbox], UnableToWriteToAadException 

+ FullyQualifiedErrorId : [Server=VI1PR09MB4288,RequestId=69a01696-9b1f-4f08-a8f0-1649caf8e3c9,TimeStamp=28-2-2022 

20:47:17] [FailureCategory=Cmdlet-UnableToWriteToAadException] D253294A,Microsoft.Exchange.Management.RecipientTa 

sks.RemoveMailbox

+ PSComputerName        : outlook.office365.com

Answer 1

Hello,

It is a booking calandar before 2017, so I only can remove it with powershell.

The Get-Mailbox -RecipientTypeDetails Scheduling gets an overview of the 2 booking calendars I have.

The  Get-AzureADUser -SearchString "DeKeiSteenderen" doesnot get an error but no list.

Removing gets errors

Trying with a different computer and with a different admin gives the same errors

Regards

Answer 2

Hi Geert Postma,

Thanks for choosing Microsoft Community.

Based on your description, I know that you want to delete booking calendars. According to your error page, it seems that the booking calendar is not in Azure AD. You can try the following ways to try to delete it and check if this can make it.

1. When we create a Booking calendar, for example, name it “Test Booking”, in fact, it creates an identity in Admin center, and we can just remove that identity in admin center.

2. If you can not do that as the suggestion 1, you can actually use PowerShell to realize it.

First, you can try to run following two commands to check if it will prompt any result.

Get-Mailbox -RecipientTypeDetails Scheduling (Exchange Online PowerShell)

        Get-AzureADUser -SearchString "name string of booking mailbox" (Install AzureAD PowerShell for Graph | Microsoft Docs)

Then, run command in Delete a booking calendar | Microsoft Docs. If you still meet that error, I sincerely recommend you wait for a while, for it can be just a temp issue. If there’s any other admin in your organization, let other admin try it to check if issue can be reproduced. You could also change a different device to test it for some unknown session caches.

If there is any update, please feel free to let me know. Your understanding is highly appreciated.

Thanks for your precious time. Have a nice day.

Best Regards,

Katherine