To unlock the upgrade ports of your system, try entering the generic Windows Pro Key:
VK7JG-NPHTM-C97JM-9MPGT-3V66T
This will start the upgrade process.
Please switch off your internet connection before clicking on “Start.”
If an error pops up, do not worry about it, it only means that the restart of your system was not successful.
Make sure to switch your internet back on before restarting.
After restarting, your system will be successfully upgraded to Windows Pro, then you can simply enter your product Key, and it should be successfully activated.
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