If you’re running Windows 10 Home and want to know whether it’s worth moving on to Windows 10 Pro, there’s a straightforward way of switching between the two versions of Microsoft’s latest operating system.
All you need to do is swap your current Windows 10 Home product key for the default Windows 10 Pro one which Microsoft has made available to all users.
On the Microsoft Community Forums, Charles of Microsoft says:
From your Windows 10 Home running Version 1511, enter the Windows 10 Pro Default key under change product key.
This default key will not activate the system, just take you to Pro so you can activate using a valid Pro key that you will provide.
Once you have done this, the system will go through an upgrade process from Home to Pro, but will not be activated on Pro.
As you can see from the above, while this will upgrade your copy of Windows 10 Home to Pro, what it won’t do is activate it. If you decide you like the Pro version, you will need your own product key to activate the OS and use it permanently.
To switch product keys, open Settings and go to Update & security > Activation > Change Product key. Enter the product key from Microsoft (VK7JG-NPHTM-C97JM-9MPGT-3V66T) in the space provided. The upgrade process takes quite a while to complete so be patient.
If you want to buy a key for Windows 10 Pro, go the Activation page in Settings and click the Go to Store button.