Unable to connect to the Microsoft Visual Studio Remote Debuggger named xx. The connection with the remote endpoint was terminated
<p>I try to remote debug an Azure app, but when trying to attach the debugger (manually or automatically with the cloud explorer) I get the error:</p>

<blockquote>
  <p>Unable to connect to the Microsoft Visual Studio Remote Debuggger
  named xx. The connection with the remote endpoint was terminated.</p>
</blockquote>

<p>In the Event Viewer of the apps server I get the event:</p>

<blockquote>
  <p>Msvsmon was unable to start a server named '127.0.0.1:50119'. The
  following error occurred: An instance of the remote debugger is
  already running on this computer, or another process is already bound
  to the specified TCP/IP port.  View Msvsmon's help for more
  information. 08005E80</p>
</blockquote>

<p>What did I already do:</p>

<ul>
<li>Delete the web app and publishing it again (debug mode)</li>
<li>Turned off the firewall on my development machine</li>
<li>Checked that the Remote Debugging on the azure app is set to ON in the portal and has the correct Remote Visual Studio version (2015 update 2 in my case)</li>
<li>I can remote debug a UWP app on another machine on my LAN</li>
</ul>

<p>So how can I debug my webapp?</p>