ASP.NET Identity - Multiple object sets per type are not supported

asp.net, asp.net-identity, asp.net-mvc, c#, entity-framework

Solution

You do have two `DbSet`s` of the same type.

`IdentityDbContext<T>` itself contains `Users` property declared as:

public DbSet<T> Users { get; set; }

You're declaring second one in your class.

Problem

I got an error using ASP.NET Identity in my app. Multiple object sets per type are not supported. The object sets 'Identity Users' and 'Users' can both contain instances of type 'Recommendation Platform.Models.ApplicationUser'. I saw a few questions about this error in StackOverflow. All indicate on two `DbSet` objects of the same type. But in my `DbContext` there aren't the same types of `DbSets`. Exception is thrown on `FindAsync()` method during logging in. ``` if (ModelState.IsValid) var user = await UserManager.FindAsync(model.UserName, model.Password); if (user != null && user.IsConfirmed) { ``` The problem is I don't have two `DbSets` of the same type. My Contexts look like this: ``` public class ApplicationDbContext : IdentityDbContext<ApplicationUser> { public ApplicationDbContext() : base("DefaultConnection") { } public System.Data.Entity.DbSet<RecommendationPlatform.Models.ApplicationUser> IdentityUsers { get; set; } } ``` and ``` public class RecContext : DbContext { public RecContext() : base("RecConnection") { Database.SetInitializer<RecContext>(new DropCreateDatabaseIfModelChanges<RecContext>()); } public DbSet<Recommendation> Recommendations { get; set; } public DbSet<Geolocation> Geolocations { get; set; } public DbSet<Faq> Faqs { get; set; } public DbSet<IndexText> IndexTexts { get; set; } } ``` What could cause this problem? Maybe something connected with in-built ASP.NET Identity functionalities? Anyway, what is `Users` type? I don't have it in my app...

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