How to Change the User Account Created by Microsoft Bookings
Question details
Administrators want to change or prevent the automatic user account creation generated by Microsoft Bookings to use an existing account and avoid cluttering the Active Directory.

- Product
- Microsoft Bookings
- Device & OS
- not provided
- Scenario
- Creating a shared booking calendar without generating unnecessary accounts in Active Directory.
- Observed behavior
- Microsoft Bookings automatically creates a new user account in Active Directory every time a shared booking calendar is configured.
Ensure you have Microsoft 365 Global Administrator or Exchange Administrator privileges before attempting to modify or investigate Active Directory user accounts.
Seek Administrative Support from Microsoft
Since modifying the underlying account structure of Bookings requires backend Exchange and AD access, contacting Microsoft Support or the Bookings Community is the required approach.
Microsoft Bookings inherently creates a disabled user account to provision the required Exchange mailbox for each new booking calendar. Changing this default behavior requires specialized administrative intervention and confirmation from Microsoft specialists.
Collect your Microsoft 365 tenant type, current booking calendar configuration, and the specific details of the automatically created account in your Active Directory.
Navigate to the Microsoft Tech Community forums and post your specific scenario in the Bookings section to get advice from specialists who have the required tools and permissions.
Open your Microsoft 365 Admin Center, click on 'Support', and create a new service request asking if the auto-generated account can be merged or replaced with an existing one.

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Frequently Asked Questions
Why does Microsoft Bookings create a new user account?
Every shared booking calendar requires an Exchange mailbox to store appointment data and send emails. Bookings automatically creates a disabled user account in your Active Directory to host this mailbox.
Can I link a Bookings calendar to an existing mailbox?
By default, the Microsoft Bookings interface generates a new mailbox. Linking a new calendar to an existing mailbox or account requires advanced administrative configurations that you must confirm with Microsoft Support.
What happens if I delete the Bookings user account in Active Directory?
If you delete the associated user account in Active Directory or the Microsoft 365 Admin Center, the linked Microsoft Bookings calendar will stop functioning immediately, and all scheduled appointments will be inaccessible.




