title: How to configure the port number of IIS Express to another port other than 8080.
body: <p>I've seen numerous other posts on this topic, but none that solves my problem (and I'm pulling my hair out trying to get this working!). I'm trying to create a simple one-page website in VS2013 (windows 8.1) and view the page in Firefox and I can't do it - I get "Unable to launch IIS Express Web Server"</p>
  
  <p>Then I get an error message from IIS Express that says "The specified port is in use: Port 8080 is already being used by process IIS Express (process ID '6332') Recommendations: 1. Try switching to a port other than 8080 and higher than 1024. 2) Stop the application that is using port '8080'"</p>
  
  <p>When I click on the Open Log File link I get:</p>
  
  <pre><code>Failed to register URL "http://localhost:8080/" for site "WebSite1" application "/".     Error description: Cannot create a file when that file already exists. (0x800700b7)
  Failed to register URL "http://localhost:63997/" for site "WebApplication2"         application "/". Error description: Cannot create a file when that file already exists. (0x800700b7)
  Failed to register URL "http://localhost:64532/" for site "WebApplication3" application "/". Error description: Cannot create a file when that file already exists. (0x800700b7)
  Registration completed
  </code></pre>
  
  <p>I tried uninstalling IIS Express and VS 2013 and then reinstalling VS 2013. I even uninstalled VS2010 which was also on my machine. I've also tried changing the Project URL to use port 8090 and that doesn't help either.</p>
  
  <p>Please help!</p>