During activation, the system prompts:
We can’t active Windows on this device because the product key was already used on another device. If you think it was’t used on another device, select Troubleshoot below. ( 0xc004c008 )
Learn more about Windows Activation
You can also activate this device by going to the Store and purchasing a genuine copy of Windows.
The solution
- Press the keyboard Win + R
- Input “slui 4”, and choose your country
- Send us the number of 9 group ( ID ng pag-install )
After we get your ID, we will send you another confirmation ID, and you enter the confirmation ID.