Graph calendar api return exception "MailboxNotEnabledForRESTAPI" when i use MTR account.

giuseppe ranieri 0 Reputation points
2023-01-23T12:22:18.2766667+00:00

I'm trying to get a meeting list for an account of type MTR but graph api returns this exception:

Code: MailboxNotEnabledForRESTAPI

Message: The mailbox is either inactive, soft-deleted, or is hosted on-premise.

how can i solve it?

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. HarmeetSingh7172 4,811 Reputation points
    2023-01-23T12:39:04.31+00:00

    Hello @giuseppe ranieri

    Thanks for reaching out!

    It seems there is no valid M365 license assigned to an AAD user. This error can occur if the mailbox is on a dedicated Microsoft Exchange Server and is not a valid Microsoft 365 mailbox. Please note that Exchange Online mailbox and outlook calendars will only be available/created for the users with a valid M365 license.

    Please refer to this similar post and documentation.

    Hope this helps.

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