ASP.NET 5 MVC: unable to connect to web server ‘IIS Express’

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After installing Update 2 for Visual Studio 2015 I started getting the same error. I tried everything above with no luck. However, I found a solution that works for me:

  1. Delete YourSolutionFolder\\.vs\config\applicationhost.config file (note: .vs is a hidden folder)
  2. Open Visual Studio, right-click on web site > Properties > Debug tab > Web Server Settings > App URL – change port number.

If you have IIS configured to use the same port, (stop the application / use different port) and try again.

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