yep

Gameboard.ShogiUI.Sockets/Managers/GameboardManager.cs

@@ -31,9 +31,9 @@ namespace Gameboard.ShogiUI.Sockets.Managers
 				throw new InvalidOperationException("Cannot create user from given claims.");
 			}
 
-			var user = principal.IsGuest()
-				? User.CreateGuestUser(id)
-				: User.CreateMsalUser(id);
+			var user = principal.IsMicrosoft()
+				? User.CreateMsalUser(id)
+				: User.CreateGuestUser(id);
 
 			await repository.CreateUser(user);
 			return user;