/"Activation failed because this device does not have a valid digital entitlement or product key. Error code: 0x803F7001.
This activation error code 0x803F7001 in Windows 10 is caused if you perform a clean install of Windows 10 using a flash drive. This error can also occur if you update your BIOS.
It is possible that there is also a problem with the Microsoft activation server and your Windows is not activated. In this case, you can only wait and check whether it is the problem on Microsoft's side or the recent changes you have made to your PC.
This tutorial will apply to computers, laptops, desktops and tablets running Windows 10 operating system (Home, Pro, Enterprise, Education) from all supported hardware manufacturers, such as Dell, HP, Acer , Asus, Toshiba, Lenovo and Samsung.
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