9 Once you've done all this, Re-start your computer and the "windows is not activated message should no longer appear. Note: I'm n... Microsoft Learn Get help with Windows activation errors - Microsoft Support 0xC004F213 - Windows reported that no product key was found on your device. A Windows license is associated with your device hardw... Microsoft Support How to fix error code 0xc004f074 in Windows PC? - Blackview Sep 26, 2025 —