Run the game without an internet connection. It will display an Unlock Request Code Visit the Support Site: On a device with internet, go to the official Rockstar Activation Support page Enter Your Details: Input your Serial Key Unlock Request Code to receive your final Unlock Code 3. Modern Activation (Recommended)
Enter your (the serial key) to add the game to your library. Activation Not Working for Grand Theft Auto IV on PC grand theft auto iv serial key and unlock code