Disable User in ASPNET identity 2.0

You would need to introduce your own flag into a custom IdentityUser-derived class and implement/enforce your own logic about enable/disable and preventing the user from logging in if disabled.

When you create a site with the Identity bits installed, your site will have a file called "IdentityModels.cs". In this file is a class called ApplicationUser which inherits from IdentityUser.

// You can add profile data for the user by adding more properties to your ApplicationUser class, please visit https://devblogs.microsoft.com/aspnet/customizing-profile-information-in-asp-net-identity-in-vs-2013-templates/ to learn more.
public class ApplicationUser : IdentityUser

There is a nice link in the comments there, for ease click here

This tutorial tells you exactly what you need to do to add custom properties for your user.

And actually, don't even bother looking at the tutorial.

1. add a property to the ApplicationUser class, eg:

   public bool? IsEnabled { get; set; }

2. add a column with the same name on the AspNetUsers table in your DB.

3. boom, that's it!

Now in your AccountController, you have a Register action as follows:

public async Task<ActionResult> Register(RegisterViewModel model)
        {
            if (ModelState.IsValid)
            {
                var user = new ApplicationUser { UserName = model.Email, Email = model.Email, IsEnabled = true };
                var result = await UserManager.CreateAsync(user, model.Password);
                if (result.Succeeded)

I've added the IsEnabled = true on the creation of the ApplicationUser object. The value will now be persisted in your new column in the AspNetUsers table.

You would then need to deal with checking for this value as part of the sign in process, by overriding PasswordSignInAsync in ApplicationSignInManager.

I did it as follows:

public override Task<SignInStatus> PasswordSignInAsync(string userName, string password, bool rememberMe, bool shouldLockout)
    {
        var user = UserManager.FindByEmailAsync(userName).Result;

        if ((user.IsEnabled.HasValue && !user.IsEnabled.Value) || !user.IsEnabled.HasValue)
        {
            return Task.FromResult<SignInStatus>(SignInStatus.LockedOut);
        }

        return base.PasswordSignInAsync(userName, password, rememberMe, shouldLockout);
    }

Your mileage may vary, and you may not want to return that SignInStatus, but you get the idea.

The default LockoutEnabled property for a User is not the property indicating if a user is currently being locked out or not. It's a property indicating if the user should be subject to lockout or not once the AccessFailedCount reaches the MaxFailedAccessAttemptsBeforeLockout value. Even if the user is locked out, its only a temporary measure to bar the user for the duration of LockedoutEnddateUtc property. So, to permanently disable or suspend a user account, you might want to introduce your own flag property.

You don't need to create a custom property. The trick is to set the LockoutEnabled property on the Identity user AND set the LockoutoutEndDateUtc to a future date from your code to lockout a user. Then, calling the UserManager.IsLockedOutAsync(user.Id) will return false.

Both the LockoutEnabled and LockoutoutEndDateUtc must meet the criteria of true and future date to lockout a user. If, for example, the LockoutoutEndDateUtc value is 2014-01-01 00:00:00.000 and LockoutEnabled is true, calling theUserManager.IsLockedOutAsync(user.Id) will still return true. I can see why Microsoft designed it this way so you can set a time span on how long a user is locked out.

However, I would argue that it should be if LockoutEnabled is true then user should be locked out if LockoutoutEndDateUtc is NULL OR a future date. That way you don't have to worry in your code about setting two properties (LockoutoutEndDateUtc is NULL by default). You could just set LockoutEnabled to true and if LockoutoutEndDateUtc is NULL the user is locked out indefinitely.