به شکل زیر عمل کنید:

    public class MyRazorViewEngine : RazorViewEngine
    {
        public MyRazorViewEngine()
        {
            FileExtensions = new[]
            {
                "cshtml"
            };

            AreaViewLocationFormats = new[] {
                "~/Areas/{2}/Views/{1}/{0}.cshtml",
                "~/Areas/{2}/Views/Shared/{0}.cshtml"
            };

            AreaMasterLocationFormats = new[] {
                "~/Areas/{2}/Views/{1}/{0}.cshtml",
                "~/Areas/{2}/Views/Shared/{0}.cshtml"
            };

            AreaPartialViewLocationFormats = new[] {
                "~/Areas/{2}/Views/{1}/{0}.cshtml",
                "~/Areas/{2}/Views/Shared/{0}.cshtml"
            };

            ViewLocationFormats = new[] {
                "~/Views/{1}/{0}.cshtml",
                "~/Views/Shared/{0}.cshtml"
            };

            PartialViewLocationFormats = new[] {
                "~/Views/{1}/{0}.cshtml",
                "~/Views/Shared/{0}.cshtml"
            };

            MasterLocationFormats = new[] {
                "~/Views/{1}/{0}.cshtml",
                "~/Views/Shared/{0}.cshtml"
            };
        }
    }

 فایل global.asax متد Application_Start :

         ViewEngines.Engines.Clear();
         ViewEngines.Engines.Add(new MyRazorViewEngine());