How to redirect if user is unauthorized

I'm using in my application, roles and I'm trying to case, the user is not authorized, to be redirected to an error page.

I'm using ASP.NET MVC com Identity , in internet search and here in StackOverFlow, I found some answers, but none of them worked:

ASP.NET - Redirect to Error Page if Roles Authorization Fails

In this case, I created a class, and I wrote down the HandleUnauthorizedRequest method, thus:

public class PermissoesFiltro : System.Web.Mvc.AuthorizeAttribute
{
    protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
    {
        if (!filterContext.HttpContext.User.Identity.IsAuthenticated)
        {
            // The user is not authenticated
            base.HandleUnauthorizedRequest(filterContext);
        }
        else if (!this.Roles.Split(',').Any(filterContext.HttpContext.User.IsInRole))
        {
            // The user is not in any of the listed roles => 
            // show the unauthorized view
            filterContext.Result = new ViewResult
            {
                ViewName = "~/Views/Shared/Page_403.cshtml"
            };
        }
        else
        {
            base.HandleUnauthorizedRequest(filterContext);
        }
    }
}

In this other example: Authentication and Permissions of users in ASP.NET MVC 4

I also created a class, and sub-wrote the OnAuthorization method, thus:

public class PermissoesFiltro : System.Web.Mvc.AuthorizeAttribute
{
    public override void OnAuthorization(AuthorizationContext filterContext)
    {
        base.OnAuthorization(filterContext);

        if(filterContext.Result is HttpUnauthorizedResult)
        {
            filterContext.HttpContext.Response.Redirect("~/Views/Shared/Page_403.cshtml");
        }
    }
}

But neither of the two funcina, when I try to access a page that is not authorized, I am redirected to the login screen.

My controller:

• Index - authenticated users only;
• About - Attended users who belong to the rule "TEST";

• Contact - All.

  public class HomeController : Controller
  {
      [Authorize]
      public ActionResult Index()
      {
          return View();
      }
  
      [Authorize(Roles = "TESTE")]
      public ActionResult About()
      {
          ViewBag.Message = "Your application description page.";
  
          return View();
      }
  
  
      public ActionResult Contact()
      {
          ViewBag.Message = "Your contact page.";
  
          return View();
      }
  }