Graph API - got invalid user error with a valid user-id

Question

I queried /users to get my user-id, and able to get the user info with /users/{my-id}. But when I query /users/{my-id}/mailFolders, I got the below error message in both my app using app permission and graph explorer.

The requested user 'xxxxxxxxx' is invalid.

Is it not possible to use app permission with personal microsoft account?

Answer 1

Hi @Jason Leung

Yes, application permissions are not supported for personal accounts. Also, personal accounts do not require a MS 365 subscription, which is necessary for work accounts.

Personal accounts are only available in a delegated context. Try logging in your user to Graph Explorer and calling the /me/mailFolders endpoint.

Hope this helps.

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Answer 2

Hi Jason Leung,

I published an article to show how to Create Custom Folder in Exchange Online Mailboxes using Graph API. I have explained the app permission requirement in the article. Please have a look at the article and see it helps to resolve the issue

Hope this helps.

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