Here are the steps to use ASP.NET MVC 5 in Visual Studio 2012:
- Start your ASP.NET MVC 4 project.
- Install-Package Microsoft.AspNet.WebApi -pre
- Install-Package Microsoft.AspNet.Mvc -Pre
- Install-Package Microsoft.AspNet.SignalR -Pre
These two will update:
- Microsoft.AspNet.Mvc 5.0.0-rc1
- Microsoft.AspNet.Razor
- Microsoft.AspNet.WebApi 5.0.0-rc1
- Microsoft.AspNet.WebApi.Client 5.0.0-rc1
- Microsoft.AspNet.WebApi.Core 5.0.0-rc1
- Microsoft.AspNet.WebApi.WebHost 5.0.0-rc1
- Microsoft.AspNet.WebPages 3.0.0-rc1
- and some other goodies
If these upgrades did not update your web.config, then check out this useful page: upgrading from MVC4 to MVC5.