The moment you reconnect to the internet, the Xbox Live servers compare your local file with their cloud backup. If there’s a mismatch—say, you magically gained 500 cars in five minutes—the server will usually overwrite your local file with the cloud version, or flag the account for a sync error.
Press Win + R and type: %localappdata%\Packages\Microsoft.624F8B84B80_8wekyb3d8bbwe\SystemAppData\wgs . Open the folder with the . forza horizon 5 100 save game microsoft store top