You also need the entrypoint. This comes from the Umbraco extensions dotnet template. This handles the authentication for you https://cdn.discordapp.com/attachments/882984798719729704/1341378223044300942/image.png?ex=67b5c751&is=67b475d1&hm=2dc3ce1720308eb7d104111e516c1d0bed0c6c29d4f52f1e16911da11adcd51c&