Forza.horizon.4.ultimate.edition-lootbox.part12... Here

Ensure all parts (like "part12") are in the same folder before extracting with a tool like 7-Zip or WinRAR .

If you need to manually register the game after extraction, you typically use PowerShell (Admin) and run this command from within the game's folder: Add-AppxPackage -Register AppxManifest.xml Forza.Horizon.4.Ultimate.Edition-LOOTBOX.part12...

The save data for this version is typically found in: %LOCALAPPDATA%\Packages\Microsoft.SunriseBaseGame_8wekyb3d8bbwe\SystemAppData\wgs\ Ensure all parts (like "part12") are in the

If the game crashes on the "Welcome, MRLOOTBOX" screen, try blocking the game's .exe in your Firewall (both Inbound and Outbound rules). Forza.Horizon.4.Ultimate.Edition-LOOTBOX.part12...