The jump from version to 1.478.564 represents a significant patch deployed in late 2021. This update did not merely alter minor variables; it introduced a new seasonal theme, a high-profile vehicle, and laid the groundwork for the game's transition into "End of Life" (EOL) support planning, though the game remained actively supported at the time.
Forza Horizon 4 or Forza Horizon 5 won't launch or crashes on PC Forza Horizon 4 update 1.465.282 - 1.478.564 -E...
If you officially owned the game prior to this date, you can still download it and access the Forza Horizon 4 servers , which remain completely operational. The jump from version to 1