Background applications often inject 32-bit code into Forza Horizon 5's 64-bit process.

  • Launch Forza Horizon 5. If it works, re-enable services one by one to find the culprit.

    • If you see Error 0xc00007b when trying to launch Forza Horizon 5, it usually means Windows is having trouble reading a 32-bit vs. 64-bit file mismatch — often related to DirectX, Visual C++, or .NET components. Below are proven fixes.

    If the error persists, system file corruption is the cause.

    Forza Horizon 5 uses DirectX 12, but the launcher relies on legacy DirectX 9/10 components.

    Perform these steps in order. Do not skip any, as each step builds on the last.