title: Cannot send messages from Microsoft Bot Framework
body: <p>Version 3.5.20</p>
  
  <p>The emulator at first is supposed to return a response with the number of characters of a user input string. However even after using the default endpoint url which is <a href="http://localhost:3978/api/messages" rel="nofollow noreferrer">http://localhost:3978/api/messages</a>, whenever inputting a string, the message is not sent. What appears in the log is show in one of the images below.</p>
  
  <p>When accessing the app settings, the emulator port is modifiable. The emulator port was 9002 by default and even changing it to 9000 (which I remember seeing in some other posts) did not fix the issue. </p>
  
  <p><strong>Log</strong></p>
  
  <pre><code>Emulator listening on http://[::]:9002
  failed to start ngrok: spawn D:\Downloads\Setup\ngrok-stable-windows-amd64\ngrok.
  Click here to configure ngrok.
  Checking for new verson...
  Application is up to date.
  </code></pre>