Microsoft — Upgradation to Windows 10

Address:

Bhuban Road, Uzanbazar, House No. 17, Guwahati-781001, Kamrup(M), ASSAM , INDIA. Emai: [email protected]

The most irritating issue is that I purchased a Desktop Computer in 2019 with is pre-installed Windows. I was offered to upgrade to Window-10 and after upgradation my windows got deactivated. I have been asked to put the key. I once tried to resolve the issue with the technical staff but the effort was in vain. Please do the needful at the earliest.
Regards
Shankar P Bhattacharjee