diff --git a/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs b/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
index 30905d4149..ca21ff6011 100644
--- a/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
+++ b/src/Microsoft.AspNetCore.Server.IISIntegration/AuthenticationHandler.cs
@@ -29,7 +29,7 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             }
             else
             {
-                return Task.FromResult(AuthenticateResult.None());
+                return Task.FromResult(AuthenticateResult.NoResult());
             }
         }
 
@@ -77,15 +77,5 @@ namespace Microsoft.AspNetCore.Server.IISIntegration
             _context = context;
             return Task.CompletedTask;
         }
-
-        public Task SignInAsync(ClaimsPrincipal user, AuthenticationProperties properties)
-        {
-            throw new NotSupportedException();
-        }
-
-        public Task SignOutAsync(AuthenticationProperties properties)
-        {
-            return Task.CompletedTask;
-        }
     }
 }