No authenticationScheme was specified, and there was no DefaultChallengeScheme found Cookies Authentication

Question

I am using the below code for authentication in ASP.NET Core 2.0 using cookies

services
    .AddAuthentication(CookieAuthenticationDefaults.AuthenticationSch         


        

Answer 1

HttpContext.Authentication is obsolete in ASP.net core 2.0, so instead HttpContext.Authentication.SignInAsync use HttpContext.SignInAsync