title: Error access denied in microsoft graph api to read user messages
body: <p>When I call <code>https://graph.microsoft.com/v1.0/me/messages</code> in Postman, it returns this error:</p>
  
  <pre><code>{
      "error": {
      "code": "ErrorAccessDenied",
      "message": "Access is denied. Check credentials and try again.",
      "innerError": {
          "request-id": "ea5ef6c7-5c89-4ad6-975f-aec77e6f5064",
          "date": "2019-02-25T12:00:07"
          }
      }
  }
  </code></pre>
  
  <p>Provide all permission that the app needs. Except this "Use Exchange Web Services with full access to all mailboxes" in office 365 Exchange online and also give grant permission but still can't access.</p>
  
  <p><a href="https://i.stack.imgur.com/dLuZY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dLuZY.png" alt="center image description here"></a>
  <a href="https://i.stack.imgur.com/gsJdy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gsJdy.png" alt="Permission images"></a></p>