Zrób tak jako opisano na stronie;
How to Upgrade Windows 10 Home to Windows 10 Pro
z uwzględnieniem postu Tsxy;
"At step 5, OEM "product keys will not be accepted" It must be a retail key. This is not entirely true. If you try to upgrade from Windows 10 home(oem) and enter VK7JG-NPHTM-C97JM-9MPGT-3V66T it will reject it (error 0xC004F050 I believe). However if you unplug your network cable at step 6, then press Start, it will proceed to upgrade to Windows 10 pro. Once your pc has restarted you can then enter your own Windows 10 professional key."