title: Why and how to fix? IIS Express "The specified port is in use"
body: <p>We know a random port number is assigned to a web application in Visual Studio. It works fine in my office desktop. But when I pull the code onto my laptop (from VisualStudio.com) and run the web app. I got a message, saying,</p>
  
  <h1>The specified port is in use</h1>
  
  <p>Port 10360 is already being used by another application.</p>
  
  <h2>Recommendations</h2>
  
  <ol>
  <li>Try switching to port other than 10360 and higher than 1024.</li>
  <li>Stop the application that is using port 10360.</li>
  </ol>
  
  <hr>
  
  <p>I can fix it using <code>Recommendation #1</code> by changing the port into something else like 13333. But I am very curious what happened to port 10360. How can I check what application is using port 10360? How can I stop that application?</p>