Asp.net identity. Remember me, don't work

Question

I create a new ASP.NET Core 3.1 MVC project. Authentication change: store user accounts in-app.

Adding new scaffolded item -> Identity -> Choose Account\login and Register

Setting:

ConfigureServices(IServiceCollection services)
{
    services.AddDbContext<ApplicationDbContext>(options =>
          options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
 
    services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true)
                .AddEntityFrameworkStores<ApplicationDbContext>();
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseAuthentication();
    app.UseAuthorization();
}

Next I ran Update-database:

User registration is successful.

But if I log in with the "Remember me" flag. Then the next time I go to the logging page. Fields name and password is empty. How to implement auto-filling of these fields?

Answer 1

The "remember me" option determines whether the authentication cookie persists beyond the current browser session. It doesn't - and shouldn't - attempt to persist your credentials anywhere.

All modern browsers have built-in password managers, and there are plenty of extensions available for third-party password managers. Let the browser take care of remembering the login details. Anything else will inevitably be horrendously insecure.

Troy Hunt: How to build (and how not to build) a secure “remember me” feature