MVC-Web API: 405 method not allowed

Question

So, I am stuck in a strange behavior, that is, I am able to send(or POST) data using Postman (plugin of chrome) or using RESTClient(extension of Firefox)<

Answer 1

No need webconfig, all you need is to add:

  services.AddCors(o => o.AddPolicy("MyPolicy", builder =>
            {
                builder.AllowAnyOrigin()
                       .AllowAnyMethod()
                       .AllowAnyHeader();
            }));