To ensure your legitimate serial number works for version 1.5.9, follow these specific steps:
: Ensure you have an active internet connection, as the game requires it for license validation. city+car+driving+serial+number+159+work
: Right-click the game shortcut and select "Run as administrator" to allow the activation window to save license data to your drive. To ensure your legitimate serial number works for version 1
: Add CityCarDriving.exe to your Windows Firewall and antivirus exclusion lists to prevent them from blocking the activation server. city+car+driving+serial+number+159+work