Can't upgrade from Windows 10 Home to Pro!
Option 1: https://answers.microsoft.com/en-us/windows/forum/all/cant-upgrade-from-windows-10-home-to-pro/89b92990-ad0e-4cac-af30-db6a3237d9f9
After the installation media is created, suggest you to upgrade to Windows 10 Pro from the installation media. When the upgrade asks for product key, enter the product key purchased for Windows 10 Pro. If it does not accept, suggest you to skip the activation step. After the Operating System is installed, suggest you to activate by phone by following the steps below:
- Press “Windows key + R” and type “slui 4” and press Enter.
- Select the Region from the list and click Next.
- Call the Free number provided on top and activate via phone.
Upgrade to Windows 10 Pro using the following default product key:
After upgrading, proceed to enter the Windows 10 Pro key you got.
Click Start > Settings > Update & security > Activation > Change the product key
Enter the product key, close then restart your computer, it should reactivate automatically.