we bought computer from local shop with Microsoft office original. the shop send me this link to download the software and he gave me a product key.

<http://down.microsoft-oem.com/office/en_office_professional_plus_2016_x86_x64_dvd_6962141.iso>

i want to be sure the license of the microsoft office is original. if i have the product key does it means its original.

how to be sure

best regards

gbu