Windows 10: Regarding product key of microsoft office

I recently bought a laptop in which I got the licensed version of Microsoft office installed in it. But after a month, it asked for activation which required product key that I could not locate in the bills and slips I got during the purchase and now I am unable to use the ms-office. Please guide me a way out .

Regards,

Priyanka Sharma

:)

 

MS office 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.����������������

 

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

I want my product key for ms office

 

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.����������������