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Ensure that the ASP.NET and Static Content features are installed. If running on IIS7 and IIS7.5 (Windows 2008 and Windows 2012), the The ASP.NET feature is located in the Windows Features dialog under Internet Information Services → World Wide Web Services → Application Development Services → ASP.NET and the Static Content feature is located in the Windows Features dialog under Internet Information Services → World Wide Web Services→ Common HTTP Features → Static Content. In IIS6 (Windows Server 2003), the ASP.NET feature can be installed by selecting Enable ASP.NET on the Application Server Options dialog accessed by choosing Application Server (IIS, ASP.NET) from the Configure You Server Wizard. There is no need to do anything for the Static Content feature if running IIS6 (Windows Server 2003).
NOTE: If you wish to use LDAP or Mixed authentication modes you should first ensure that the Windows Authentication feature is installed - see IIS 7.7.5 Configuration for LDAP and Mixed authentication modes guide for further details.
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