Request API access to personal outlook.com

Question

Request API access to personal outlook.com

Alexis Kt 20

Hello,

Following the deactivation of basic authentication, I can no longer access my mailbox via API.
I have corrected the code to use Oauth2 through Microsoft Entra, but I get the following error message:
{'error': {'code': 'MailboxNotEnabledForRESTAPI', 'message': 'The mailbox is either inactive, soft-deleted, or is hosted on-premise.'}}

Could you activate the API for personal mailbox?

I looked at this page which asks you to send an e-mail to outlookdev@microsoft.com, but the mailbox no longer exists.
https://learn.microsoft.com/fr-fr/previous-versions/office/office-365-api/api/version-1.0/use-outlook-rest-api-v1

Regards,

Anonymous

2024-10-14T03:00:47.8833333+00:00

Good day!

Thank you for posting to Q&A forum. We are glad to assist. We are looking into your situation, and we will update the thread shortly.

Appreciate your patience and understanding and thank for your time and cooperation.

Answer accepted by question author

Anonymous

Hello Alexis Kt,

Thank you for reaching out to Microsoft Support!

This error may be due to the flow you used to obtain the token, please use Auth code flow to obtain the token, the specific process is as follows:

https://learn.microsoft.com/en-us/graph/auth-v2-user?tabs=http

Hope this helps.

If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.

Alexis Kt 20 Reputation points

2024-10-14T06:41:47.01+00:00

Hello,

Thanks for the reply, but I'm sure my authorization works, because I use the same one for another business account and it works. I just change the endpoint and the configuration of my application.

The problematic account I'm talking about is a free personal Outlook.com account. Before disabling basic authentication, everything worked fine.

Regards,
Anonymous

2024-10-14T08:15:37.8733333+00:00

Yes, I have noticed that you are using a personal account, but the authorization method for personal and commercial accounts is different in some ways, did you use Auth code flow to obtain the token?
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Alexis Kt 20 Reputation points

2024-10-14T15:44:38.6766667+00:00

Hello,

I think I succeeded with your help. I reread the documentation and the problem was that I was directly querying the tenant, which is the wrong endpoint for personal accounts.

Works well with "common" :)

Regards,

1 additional answer

Your answer

Anonymous

2024-10-14T03:00:47.8833333+00:00

Good day!

Thank you for posting to Q&A forum. We are glad to assist. We are looking into your situation, and we will update the thread shortly.

Appreciate your patience and understanding and thank for your time and cooperation.
Alexis Kt 20 Reputation points

2024-10-14T06:41:47.01+00:00

Hello,

Thanks for the reply, but I'm sure my authorization works, because I use the same one for another business account and it works. I just change the endpoint and the configuration of my application.

The problematic account I'm talking about is a free personal Outlook.com account. Before disabling basic authentication, everything worked fine.

Regards,
Anonymous

2024-10-14T08:15:37.8733333+00:00

Yes, I have noticed that you are using a personal account, but the authorization method for personal and commercial accounts is different in some ways, did you use Auth code flow to obtain the token?
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Alexis Kt 20 Reputation points

2024-10-14T15:44:38.6766667+00:00

Hello,

I think I succeeded with your help. I reread the documentation and the problem was that I was directly querying the tenant, which is the wrong endpoint for personal accounts.

Works well with "common" :)

Regards,

Answer 1

Hello Alexis Kt,

Thank you for reaching out to Microsoft Support!

It sounds like you're encountering a common issue when transitioning to OAuth2 for accessing your mailbox. The error message MailboxNotEnabledForRESTAPI typically indicates that the mailbox is either inactive, soft-deleted, or hosted on-premise.

Here are a few steps you can take to resolve this issue:

Check Mailbox Status: Ensure that your mailbox is active and not soft-deleted. You can do this by logging into your Outlook account via the web interface.
Microsoft 365 License: Verify that your account has an active Microsoft 365 license. Sometimes, this error occurs if the user lacks the necessary license.
Permissions and Consent: Make sure you have granted the correct permissions and consent for the API access. You might need to clear your browser cache and re-authenticate to ensure the permissions are correctly applied.
Use Microsoft Graph API: The Outlook REST API v1.0 is deprecated. It's recommended to use the Microsoft Graph API instead, which provides a more robust and future-proof way to access mailbox data.

Hope this helps.

If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.

Alexis Kt 20 Reputation points

2024-10-14T06:38:20.6933333+00:00

Hello,

Thanks for the reply, I'm not using a 365 license, I'm talking about a free personal Outlook.com account. Before disabling basic authentication, everything worked fine.

Finally, you mention a 365 license, but what type? Is a basic 365 license enough to access the API (€2.00/month)?

Regards,

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Request API access to personal outlook.com

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