title: Azure function gets 'Listener unable to start' error on linux
body: <p>I am using Ubuntu Linux and I have been having issue when I try to run .Net core 2.2 Azure function app.
  A quick googling showed that it could be related to storage somehow but none of them were clear. </p>
  
  <p>Although the runtime seems to start running normally, I get this error after a while:</p>
  
  <pre><code>[6/4/2020 8:35:09 am] The listener for function 'FunctionName' was unable to start.
  [6/4/2020 8:35:09 am] The listener for function 'FunctionName' was unable to start. Microsoft.Azure.Storage.Common: Connection refused. System.Net.Http: Connection refused. System.Private.CoreLib: Connection refused.
  </code></pre>