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#11
I assume you want to keep all you programs an files you have within windows 8.1 home OS..
Thus the reason you want to upgrade in the first place...
Your PC has already recorded a windows 10 pro activation - via insider preview..
so the only other reason to upgrade 8.1 home to 10 home - is to get a Home activation recorded..
you can test the Windows 10 Pro ISO to upgrade windows 8.1 home - but not designed to upgrade in that manner..