Add an AutomaticChallenge option to disable HttpSys from adding auth headers on 401

Hi , I have a REST API appilcation hosted on HTTP.Sys with windows authetication option enabled . The REST API is protected by "Bearer" authentication scheme . Once the API invoked with invalid token the authentication scheme returns 401 with "WWW-Authenticate" "Bearer" header . Since application is hosted on HTTP.Sys the additional "WWW-Authenticate" "Negotiate" header has been added by AuthenticationManager of Http.Sys . The application uses windows authentication only in the user authentication endpoint . Is there a way to add windows authentication to specific route once hosted on http.sys ?