On Sat, 29 Dec 2018 14:10:51 -0000 (UTC), Roger Blake wrote:

On 2018-12-29, mechanic wrote:
Nonsense. According to a later post of yours, the computer in
question has a Win7 licence. Thus installing win10 and expecting
it to be activated is fruitless.

Not when it previously had been upgraded to Windows 10 via
Microsoft's free upgrade offer, numbnuts.

Then the machine with upgraded Win10 will be logged in the
appropriate MSFT server and reactivation is automatic at any
reinstall of the Win10. This argument was all sorted out about five
versions ago (of Win10).