Authorization in ASP.NET Core. Always 401 Unauthorized for [Authorize] attribute

Question

For the first time I\'m creating Authorization in ASP.NET Core. I used tutorial from here TUTORIAL

The problem is when I sending request from postman:

Answer 1

If you are using ASP.NET Core 3.0

Check this order

app.UseAuthentication();

app.UseRouting(); //must be below app.UseAuthentication();

If you are using ASP.NET Core < 3.0

Just replace the app.UseRouting(); by app.UseMvc();

i.e:

app.UseAuthentication();

app.UseMvc(); //must be below app.UseAuthentication();