title: Access denied due to invalid subscription key (Face API)
body: <p>I am having trouble using Microsoft Face API. Below is my sample request:</p>
  
  <pre><code>curl -v -X POST "https://westus.api.cognitive.microsoft.com/face/v1.0/detect?returnFaceId=true&amp;returnFaceLandmarks=false&amp;returnFaceAttributes=age,gender" -H "Content-Type: application/json" -H "Ocp-Apim-Subscription-Key: 1xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxd" --data-ascii "{\"url\":\"http://www.mrbeantvseries.co.uk/bean3.jpg\"}"
  </code></pre>
  
  <p>I use the subscription id from my cognitive services account and I got below response:</p>
  
  <pre><code>{
    "error": {
      "code": "Unspecified",
      "message": "Access denied due to invalid subscription key. Make sure you are subscribed to an API you are trying to call and provide the right key."
    }
  }
  </code></pre>
  
  <p>Not sure if I've missed out anything there. Can someone help me on this? Very much appreciated.</p>