How to authorizing from asp Mvc site & API

 

the solution of my proplem is

 
config.SuppressDefaultHostAuthentication();
config.Filters.Add(new HostAuthenticationFilter(OAuthDefaults.AuthenticationType)); 

i forgut to put it in  WebApiConfig.cs 

 

But this did not solve my problem

For further explanation Look to the next

 

 

 

This is my solution explorer, It's Contains all requirements to operating API

But I Configure the application and API for OAuth in Startup.Auth.cs as in the following

 

 

The Problem occurs when I retrieve data from Data Table

in MVC this code LoginPath = new PathString("/Account/Login"),

route me to login, so it is ok in mvc but in API  Problem occurs because is retrieve the login as html code , I want retrieve a json  message.

Here is your solution, do have a look:

https://forums.asp.net/t/2082440.aspx?Authentication+with+both+Web+API+and+MVC+half+baked+