Windows 10: Is there a way for me to know that my Windows activation key is genuine?

I bought a Windows activation key from an acquaintance of mine for a pretty cheap price. But now I wonder if this is a genuine key from Microsoft. Someone please help me.

:)

 

Windows 7 not genuine problem

It seems like that's an OEM windows copy, it will do that the every time you reinstall the OS. If you have the key, next time you see the "not genuine windows copy" click it and choose to activate by phone, everything else is pretty straight forward as it explains step-by-step. If it doesn't work, then its highly likely that you got a Pirate copy.

 

How to know for sure if Windows 10 is Genuine?


If the 10 upgrade there is activated it no longer concerns how genuine the previous Windows installation was since now the genuine 10 is activated on that machine for the life of the machine itself. Here coming from a genuine upgrade followed by a clean install it simply shows "Windows is activated" when bringing up the change product key screen going by way of "Start>Settings>System".

If you upgraded to 10 by way of the Media Creation Tool then you know immediately 10 came direct from Microsoft! The activation only takes place on the genuine item. The new key? or is it the new hardware profile ID being the automatic replacement for the otherwise older must enter product key? It suggests the latter being a free upgrade which actually generates a new key of it's own each time 10 is installed unless buying the 10 usb stick outright that comes with it's own separate key.

 

How to know for sure if Windows 10 is Genuine?


I upgraded to Windows 10 through the GWX app from a Windows7 installation. It had an OEM key, and most probably not genuine , however after I upgraded, i noticed that I now had a new retail key, and it showed as permanently activated even in CMD. I know that its probably a genuine version now, but is there any surefire way of knowing? Thanks in advance.