Let's consider what might cause the error during Windows activation - 0xc004f210.

This error indicates that you are using a product key that does not match your installed version of Windows. Use a product key specifically for your version of the system.

For proper activation, contact your product key seller, or you can purchase a product key for your system version from our catalog at the lowest prices starting from 8.2 €. Instant delivery of the product key to your email. Guarantee and round-the-clock technical support.