Activating Windows 8.1 Pro Build 9600 without a genuine product key generally involves using Key Management Service (KMS) emulation to mimic an enterprise licensing environment, or utilizing tools to patch system files. Important Notice:

  • Generic key for Windows 8.1 Pro: VK7JG-NPHTM-C97JM-9MPGT-3V66T

Open Command Prompt as Administrator: Press Windows key + X and select "Command Prompt (Admin)" or "Windows PowerShell (Admin)".

  • Now, to activate Windows, type the following command and press Enter: 
    slmgr /ato
  • If everything goes well, you should see a message indicating that Windows has been successfully activated.