title: How to start pgAdmin 4 v3
body: <p>I upgrade from pgAdmin 4 v2.1 to v3 in my Windows 10 pro machine.</p>
  
  <p>There is an option for me to open pgAdmin at the last step of installation.
  I clicked yes and it automatically open it using my default browser. I notice the url is localhost:64548/browser. I did bookmark it.</p>
  
  <p>After I restart my machine, I try to reopen pgAdmin using the same bookmark and I get below message </p>
  
  <pre><code>This site can’t be reached
  127.0.0.1 refused to connect.
  </code></pre>
  
  <p>Is there anything I missed?</p>