Azure AD B2C - Microsoft Graph API - Authorization_IdentityNotFound

Question

I've set up Azure B2C successfully, people can log in etc. Now I want to access Azure AD programmatically. So, I've created a new App Registration in my Azure AD B2C tenant, granted all the permissions possible, and granted Administrator consent. Essentially followed all the steps outlined here .

I can successfully retrieve an access token, but as soon as I call the Graph API, I get this error:

{
    "error": {
        "code": "Authorization_IdentityNotFound",
        "message": "The identity of the calling application could not be established.",
        "innerError": {
            "request-id": "7d96b137-c45c-4440-a14f-51227b9fa379",
            "date": "2017-09-21T08:24:56"
        }
    }
}

Other posts suggest that permissions are wrong (I've given ALL possible permissions for both MS Active Directory and Microsoft Graph), and / or no consent.

The weird thing is that if I call /users/.../drive/root/children I get a different error, indicating it can find my tenant:

{
    "error": {
        "code": "BadRequest",
        "message": "Tenant does not have a SPO license.",
        "innerError": {
            "request-id": "9018c1d1-f3a9-421d-9c9d-011ff710ed53",
            "date": "2017-09-21T08:30:11"
        }
    }
}

With the switch from Azure AD Graph to Microsoft Graph, it's hard to debug.

Answer 1

You can't use Microsoft Graph API for B2C yet . Follow this guide that uses Azure AD Graph API.