DbContext is not constructible

I have just started playing around with MVC5, having already had a fair amount of exposure to MVC4. Firstly, I decided to call `ApplicationUser` in my application `UserProfile` (so UserProfile inherits from IdentityUser). I also want to have a single DbContext so relationships between the UserProfile and other Entities are easily used. This error occurs with or without a connection string (no connection string creates a localdb mdf file). The database was building, but it kept naming the database DefaultConnection even though the connection string etc had not been named this. I realised I was not passing the connection string into my DbContext ctor. I then changed this to pass connection string namer in the ctor of my DbContext file. Since doing so I can get this error. The target context 'Mesanderson.Infrastructure.DatabaseConfig.MesandersonDb' is not constructible. Add a default constructor or provide an implementation of IDbContextFactory. With Migrations installed on my data project I have this structure Configure Database File, `InitializeDatabase` called from Global.asax ``` public class ConfigureDatabase { public void InitializeDatabase() { Database.SetInitializer<Infrastructure.DatabaseConfig.MesandersonDb>(new Infrastructure.DatabaseConfig.DatabaseInitializer()); } } ``` Initializer file ``` internal class DatabaseInitializer : MigrateDatabaseToLatestVersion<Infrastructure.DatabaseConfig.MesandersonDb, Migrations.Configuration> { } ``` Migrations Config File (auto migrations on during dev) ``` internal sealed class Configuration : DbMigrationsConfiguration<Mesanderson.Infrastructure.DatabaseConfig.MesandersonDb> { public Configuration() { AutomaticMigrationsEnabled = true; AutomaticMigrationDataLossAllowed = true; MigrationsDirectory = @"DatabaseConfig/Migrations"; } protected override void Seed(Mesanderson.Infrastructure.DatabaseConfig.MesandersonDb context) { } } ``` Finally, the DbContext file ``` internal class MesandersonDb : IdentityDbContext<Entities.Models.UserProfile> { internal MesandersonDb() : base("MesandersonDb") { } DbSet<Entities.Models.Expense> Expenses { get; set; } DbSet<Entities.Models.BlogPost> BlogPosts { get; set; } DbSet<Entities.Models.Client> Clients { get; set; } protected override void OnModelCreating(DbModelBuilder modelBuilder) { base.OnModelCreating(modelBuilder); modelBuilder.Configurations.Add(new DatabaseConfig.ModelConfig.BlogCommentConfiguration()); modelBuilder.Configurations.Add(new DatabaseConfig.ModelConfig.BlogPostConfiguration()); modelBuilder.Configurations.Add(new DatabaseConfig.ModelConfig.ClientConfiguration()); modelBuilder.Configurations.Add(new DatabaseConfig.ModelConfig.ExpenseConfiguration()); modelBuilder.Configurations.Add(new DatabaseConfig.ModelConfig.UserProfileConfiguration()); } } ``` (incase relevant) I also replaced the OOTB code on the account controller to use a UserManager factory as I dont want connection string names used all over the application. ``` public static class UserManagerFactory { public static UserManager<UserProfile> GetUserManager() { return new UserManager<UserProfile>(new UserStore<UserProfile>(new Mesanderson.Infrastructure.DatabaseConfig.MesandersonDb())); } } ``` Anywhere I have looked says the error is because there is no paramless ctor in the DbContext, but I have that.