How to enable Directory browsing by default on IIS Express

1. Go to Web.config file of your project.

2. Add the below two tags in <system.webServer> tag in web.config

<directoryBrowse enabled="true" />

<modules runAllManagedModulesForAllRequests="true" />

You should be able to use AppCmd.exe to manage IIS Express. Try this:

appcmd set config /section:directoryBrowse /enabled:true

More info on AppCmd.exe here: http://learn.iis.net/page.aspx/114/getting-started-with-appcmdexe