Create calendar event using Microsoft Graph: ErrorAccessDenied
问题 I've been using curl and the Outlook REST API v1.0 (with basic authentication) to create calendar events in Outlook calendars. Basic authentication is soon being deprecated so I am now trying to migrate to Microsoft Graph v1.0 with OAuth 2. I have got some way down the road but am stuck at "ErrorAccessDenied" when running the POST to create the event. This is what I've done so far: Registered my app (curl) here: https://apps.dev.microsoft.com/#/appList, setting Application Permissions to