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Beyond the new content, the update also included numerous bug fixes and quality-of-life improvements:

Playground Games addressed several critical issues to ensure a smoother experience: FH5-Update-from-v1.656.386.0-to-v1.663.817.0-Fi...

Forza Horizon 5 continues to evolve, and players encountering the update from to build 1.663.817.0 are in for a substantial refresh. While this version jump might seem incremental numerically, it encompasses months of optimizations, new features, and critical stability patches. In this long-form article, we break down every significant change, file size implications, known issues resolved, and how to complete the update safely across PC and Xbox platforms. Beyond the new content, the update also included

Place both downloaded parts inside a single folder on your PC. Place both downloaded parts inside a single folder

The update from v1.656.386.0 to v1.663.817.0 corresponds to the "Back to the 90's" update, officially identified as Series 39. This significant content release, which launched in October 2024, introduced a variety of new features, bug fixes, and improvements to the game.

If your installation drive is nearly full, the patching process will fail mid-way, leaving you with a corrupted, unlaunchable game.