title: Cannot login with the Firebase CLI
body: <p>I have a problem when I try to login to Firebase using the CLI. I installed <code>firebase-tools</code> using <code>npm -g install firebase-tools</code> with admin rights. The steps I do are (from a cygwin terminal on Windows 10 Professional):</p>
  
  <pre><code>firebase login --no-localhost
  </code></pre>
  
  <p>After this I get the message:</p>
  
  <pre><code>Visit the URL on any device....
  Paste authentication code here:
  </code></pre>
  
  <p>Then, on my browser, I see Google asking if I give Firebase CLI access rights, I say yes and then I get an authorization code displayed on the browser.</p>
  
  <p>I copy this code into the cygwin console and then:</p>
  
  <pre><code>Error: Authentication Error.
  </code></pre>
  
  <p>I'm at a total loss for this and it's completely stalling my efforts to get to know Firebase. All help gratefully appreciated.</p>