title: Call another Azure Function from timer triggered one
body: <p>I want to call another (not timer triggered) azure function from my timer triggered azure function.
  It compiles but during runtime I get the error:</p>
  
  <pre><code>System.ArgumentException: 'The function 'HelloWorld' doesn't exist, is disabled, or is not an orchestrator function. Additional info: No orchestrator functions are currently registered!'
  </code></pre>
  
  <p>I reduced it to this tiny code snippet.</p>
  
  <pre><code>    [FunctionName("HelloWorld")]
      public static string HelloWorld([ActivityTrigger] string name, ILogger log)
      {
          return $"Hello {name}!";
      }
  
      [FunctionName("DownloadLiveList")]
      public async void DownloadLiveList([DurableClient] IDurableOrchestrationClient client, [TimerTrigger("0 0 0 * * *", RunOnStartup = true)]TimerInfo myTimer, ILogger log)
      {
          await client.StartNewAsync&lt;string&gt;("HelloWorld", "Magdeburg");
      }
  </code></pre>
  
  <p>As I took the idea from the official Microsoft example for that kind of azure function cascading, I've no clue, why the function "HelloWorld" is not registered. After uploading into azure, the function is visible in the azure portal as all other functions from the class.</p>