title: Unable to get Cognitive Services access token from subscription key
body: <p>I have tried both key 1 and key 2 from the <code>Azure Resource Management &gt; Keys</code> page with the following, where <code>foo</code> is a direct copy/paste:</p>
  
  <pre><code>curl -X POST "https://api.cognitive.microsoft.com/sts/v1.0/issueToken?Subscription-Key=foo" --data ""
  
  curl -X POST "https://api.cognitive.microsoft.com/sts/v1.0/issueToken" -H "Ocp-Apim-Subscription-Key: foo" --data ""
  </code></pre>
  
  <p>In both cases I get:</p>
  
  <pre><code>{ "statusCode": 401, "message": "Access denied due to invalid subscription key. Make sure to provide a valid key for an active subscription." }
  </code></pre>
  
  <p>Is there something I need to configure so I can I retrieve access tokens for my subscription? My ultimate goal is to use the access token to authenticate with a Custom Speech Service Endpoint. Thanks!</p>