web.config

<?xml version="1.0"?>

<!--
  For more information on how to configure your ASP.NET application, please visit
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->

<configuration>
    <system.web>
        <compilation targetFramework="4.0" />
    </system.web>
  <system.webServer>
    <rewrite>
        <rules>
            <rule name="angularjs routes"
                    stopProcessing="true">
                <match url=".*" />
                <conditions logicalGrouping="MatchAll">
                    <add input="{REQUEST_FILENAME}" 
                        matchType="IsFile" negate="true" />
                    <add input="{REQUEST_FILENAME}" 
                        matchType="IsDirectory" negate="true" />
                    <add input="{REQUEST_URI}" 
                        pattern="^/(api)" negate="true" />
                </conditions>
                <action type="Rewrite" url="/" />
            </rule>
        </rules>
    </rewrite>
  </system.webServer>

</configuration>