MailboxNotEnabledForRESTAPI error for an Office 365 paid mailbox

Question

I am trying to access the mailbox using the graph API but it's throwing the following error message

{

code: 'MailboxNotEnabledForRESTAPI',

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

}

We do have a paid license.

Answer 1

Dear Ramon Arora,

Good day!

Thank you for posting to Microsoft Community. We are glad to assist.

As per your mentioned description about "MailboxNotEnabledForRESTAPI error for an Office 365 paid mailbox" Kindly refer to below threads from Microsoft Graph Forum to check if it may provide suitable information.

• MailboxNotEnabledForRESTAPI when trying to query users/{user-id}/people - Microsoft Q&A
• Microsoft graph api throws The mailbox is either inactive, soft-deleted, or is hosted on-premise while creating event - Microsoft Q&A

Furthermore, since we are focused on technical support for Microsoft 365 Business Exchange Online, which is not professional for Microsoft Graph. For you to be assisted properly, we have specific dedicated Forum who are handling Microsoft Graph related queries, and they have special expertise in it. So, it is recommended to kindly post your query to dedicated Exchange server team via Microsoft Graph - Microsoft Q&A Engineers who are dedicated into Microsoft Graph with rich experience and more resources can then assist efficiently. We believe they would conduct in-depth research on the problem you encountered and provide you with more professional assistance.

Thanks for your precious time and your understanding would be highly appreciated. Have a nice day!

Best regards,

Inema | Microsoft Community Moderator