Windows 10: Regard Product Key Previous Usage

1) I Purchased windows 10 product key from flip kart. Unfortunately product key came from a printed paper. Its not sealed - from Microsoft. That product key is now working which I am using .

2) Now I want to know the key previously/presently used or not of another system ?

3) How I know the owner of the key ? And how I get/Change ownership ?

:)

 

Product key regards.....................

I want my product key for ms office

 

Product key regards.....................

Hi,

For information and steps on how to get your Windows 10 product key, you can refer to the article on this

link.

If you have other questions, don't hesitate to reach out.

Regards.

 

Product key regards.....................

Sir, I want to get my product key for microsoft office which i'm forget . so for that what are the steps to be do to get my product key of my version . Whether is any way to get my product key ,Is there any chance to get product key in free of cost.
pls tell me as soon as possible.����������������