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To fix the Forza Horizon 5 (FH5) CODEX save game issue and ensure 100% progress detection, you must correctly align your Steam Account ID

By following these steps and tips, you should be able to fix the Codex save game issue in Forza Horizon 5 and enjoy a seamless gaming experience.

If you decide to proceed, community guides generally follow this pattern:

  1. Regularly backup your save game files.
  2. Keep your game version up to date.
  3. Avoid using conflicting mods or customizations.
  4. Monitor the game's community and forums for any reported issues or updates.

Safety note

Modded/cracked game files and saves can be unstable. Back up any existing save files and game folders before making changes.

Steam is Running: Make sure the actual Steam application is completely closed before launching the CODEX version, as it can interfere with the save path.

5) Run the game as administrator

  • Launch the executable as Administrator to avoid write/read permission issues that can block saves.