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Upgrade using your digital license for Windows 10 Pro
If you have installed and activated Windows 10 Pro on your device, you will have a digital permission that allows you to upgrade from the Windows 10 home page to Windows Pro without a product key.
To upgrade, select the Start button and choose Setting > Update & security > Activation.
If you have a Windows 10 product key, upgrade from the Windows 10 home page:
Select the Start button and select Setting > Update & security > Activation.
Select "Change product key" and enter the 25-character Windows 10 Pro product key.
Select "Next" to start the upgrade to Windows 10 Pro.
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