MVC “Add Controller” is “Unable to Retrieve Metadata…Config System Failed to Initialize”

Question

From scratch, I made a new solution with two projects: one was MVC 3 and the other a supporting EF 4.2 project. The whole thing builds successfully. From the MVC project I

Answer 1

Are you sure to have a ConnectionString in your Web.Config file before to create a Controller ? Sometimes we create another project which contains the Entity DB Context and we forgot to add this same connectionString in the Web.Config inside the another project.