Once you've entered your product key, click on the "Next" button to complete the activation process. You may be prompted to agree to the Rockstar Games terms of service and end-user license agreement.
Manual activation bypasses the Rockstar Games Launcher entirely. Once completed, you can launch GTAIV.exe directly from the folder, and the game will never phone home again. gta iv manual activation
Most modern versions (like the GTA IV: Complete Edition on Steam or the Rockstar Launcher) have replaced the old SecuROM system with integrated Rockstar Games Launcher activation. Once you've entered your product key, click on
Ensure you are logged in as an administrator on your PC to allow the activation to write the necessary license files. Once you've entered your product key