aspnetcore: cannot authorize with custom scheme

I’m using:

services.AddAuthentication().AddCookie("custom", options=> {
                options.LoginPath = "/admin/in";
                options.LogoutPath = "/admin/out";
            });

to register the scheme “custom” but when i try and authorize on the controller doing this:

[Authorize(Roles = "admin", AuthenticationSchemes = "custom")]
        public ActionResult Index()
        {
            return View();
        }

it doesn’t authorize the user and redirects to login page even though the user is logged in and is in the correct role.

if, however, i try this:

[Authorize(Roles = "admin", AuthenticationSchemes = "Identity.Application")]
        public ActionResult Index()
        {
            return View();
        }

the same user will happily authorize and i can get through to the page.

so my question is - how can i get my “custom” authentication scheme to work like “Identity.Application”. is there additional configuration required to get the custom authentication scheme to work correctly?

thanks.

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• ID: ee71441f-471a-89cd-0ef4-9b32b5dd85cf
• Version Independent ID: 0096c365-2f4e-5d21-89a0-c4f10fcb0ed9
• Content: Authorize with a specific scheme in ASP.NET Core
• Content Source: aspnetcore/security/authorization/limitingidentitybyscheme.md
• Product: aspnet-core
• Technology: aspnetcore-security
• GitHub Login: @Rick-Anderson
• Microsoft Alias: riande