ASP.Net Identity 2.0 AccessFailedCount not incrementing
You have to handle this manually. The CheckPassword
method calls the PasswordHasher.VerifyHashedPassword
method to validate the password, but it does not update access failed count when the provided password does not match the existing one.
Here's an example of an authenticate method that supports lockout:
UserManager<User> userManager = new UserManager<User>(new UserStore());
if (userManager.SupportsUserLockout && userManager.IsLockedOut(userId))
return;
var user = userManager.FindById(userId);
if (userManager.CheckPassword(user, password))
{
if (userManager.SupportsUserLockout && userManager.GetAccessFailedCount(userId) > 0)
{
userManager.ResetAccessFailedCount(userId);
}
// Authenticate user
}
else
{
if (userManager.SupportsUserLockout && userManager.GetLockoutEnabled(userId))
{
userManager.AccessFailed(userId);
}
}
There is also the PasswordSignInAsync which accepts a "shouldLockout" argument. Setting this to true will auto increment failed login attempts
var result = await SignInManager.PasswordSignInAsync(model.Email, model.Password, model.RememberMe, shouldLockout: true);
For .NET Core 2.1 the shouldLockout is now named lockoutOnFailure
So your login call should look like this to increment failed login attempts:
var result = await SignInManager.PasswordSignInAsync(loginModel.Email, loginModel.Password, loginModel.RememberMe, lockoutOnFailure: true);
This will also reset the failed login attempts once the user logs in successfully.