While using the Microsoft Graph API to retrieve the taskFolders in a UWP application:

Request:

GET https://graph.microsoft.com/beta/me/outlook/taskFolders

Response:

{
    "error": {
        "code": "ErrorItemNotFound",
        "message": "The specified object was not found in the store.",
        "innerError": {
            "request-id": "<ID removed fo privacy>",
            "date": "2019-03-18T17:59:17"
        }
    }
}

I can list/see the Task/ToDo folders in my outlook and ToDo app. Only the API call returns an error.

0 Answers