The game was officially delisted from the Microsoft Store in 2016 due to expiring licenses for cars and music. Online services were also permanently shut down in August 2023. "System Requirements" for Emulation

Long answer: Even if you disregard the legal issues, safety is the primary concern. Websites like Apunkagames are not moderated by any security authority. Users have reported:

Forza Horizon (2012) is an open-world racing game from Playground Games and Turn 10 Studios, praised for its driving feel, large map, and festival atmosphere. Seeking it on file-sharing/warez sites like ApunKaGames to download pirated copies is risky and not recommended.