When I try to run my ASP.NET MVC 4 application using Local IIS on Windows 7 with Visual Studio 2013. I run into the following error when the application tries to connect to
Make sure that the application pool uses an identity that has access to the desired instance of the LocalDB.
Then disable ASP.NET Impersonation in Authentication settings of the application. Otherwise, application uses IUSR_MachineName account to access the database.
This setup may not be suitable for production environment but could be sufficient for database and application development.