MVC Redirection to OnAuthorization Fails Authorization

I am trying to redirect a user to another action if his email address has not been verified. The thing is, I don’t want them to log out, I just want to redirect them. When I do this in OnAuthorization for the controller, it redirects as expected, but the user is not authenticated. I do not know why this is so. My code is as follows:

    protected override void OnAuthorization(AuthorizationContext filterContext)
    {
        base.OnAuthorization(filterContext);

        //_applicationService.CurrentUser is populated correctly at this point
        // from Controller.User
        if (_applicationService.CurrentUser != null)
        {
            if (_applicationService.CurrentUser.EmailVerified != true)
            {
                var url = new UrlHelper(filterContext.RequestContext);
                var verifyEmailUrl = url.Action("EmailVerificationRequired", "Account", null);
                filterContext.Result = new RedirectResult(verifyEmailUrl);
            }
        }

    }

Note. I deleted the unnecessary code to make it more understandable. _applicationService.CurrentUser is populated by the current user - and the user is authenticated correctly when he gets to this point. But after the redirect, the user is no longer authenticated.

, ?

OnActionExecuting, ActionFilterAttribute, , , "" ( : System.Security.Principal. IPrincipal Controller.User) .

? , . .

:

    [HttpPost]
    [AllowAnonymous]
    public ActionResult Login(LoginViewModel model, string returnUrl)
    {
        string errorMessage = "The username or password is incorrect";

        if (ModelState.IsValid)
        {
            if (_contextExecutor.ExecuteContextForModel<LoginContextModel, bool>(new LoginContextModel(){                    
              LoginViewModel = model  
            }))
            {
                ViewBag.CurrentUser = _applicationService.CurrentUser;
                _formsAuthenticationService.SetAuthCookie(model.LoginEmailAddress, model.RememberMe);

                if (_applicationService.IsLocalUrl(returnUrl))
                {
                    return Redirect(returnUrl);
                }

                return RedirectToAction("Index", "Home").Success("Thank you for logging in.");
            }
            else
            {
                errorMessage = "Email address not found or invalid password.";
            }
        }

        return View(model).Error(errorMessage);
    }