Starting from November 12th, Microsoft will no longer allow unofficial third-party accessories in the Xbox ecosystem. If you, for instance, connect an “unauthorized” third-party Xbox controller to your console after this date, it will no longer work. Warnings about the new policy are already being displayed when you connect an unofficial accessory.
In a response, Microsoft states that this decision is being made to ensure a high-quality gaming experience. Third-party accessories produced under an official license adhere to specific quality standards that cannot be guaranteed with unofficial accessories, potentially compromising the experience and safety.