Search code examples
sharepointoffice365microsoft-graph-apionedrive

How to access Onedrive Business via Microsoft Graph API

I'm working on accessing personal documents of users using the API provided by Microsoft Graph, but I am having issue with authentication.

According to this documentation I can simply create an application, set the right scopes (etc.) and then aquire an access token for a given user - this is working perfectly right now.

Querying URLs like https://graph.microsoft.com/v1.0/me/drives works - I get a https://onedrive.live.com drive as a result.

What the API doesn't return is data about a second drive on https://{tenant}-my.sharepoint.com. I have tried accessing this data using the API Endpoint: https://{tenant}-my.sharepoint.com/_api/v2.0 using the Microsoft Graph authentication token. This returns the following error:

{
    "error_description": "Unsupported security token."
}

How do I access the API of such an Office 365 OneDrive?

Solution

  • The sharepoint.com/_api/v2.0 API is not a Microsoft Graph API and it doesn't support Converged Auth tokens from the v2 Endpoint.

    Accessing SharePoint Drives uses the same API as OneDrive and OneDrive for business:

    /v1.0/sites/{siteId}/drives

    For example, if you had a team site named "AwesomeTeam" you retrieve a list of drives for that site using:

    /v1.0/sites/root/:/teams/AwesomeTeam:/drives