Using an official ISO does not mean you have a license. You will still need a valid product key or digital license to activate Windows.
Finding official, unmodified ISO files for Microsoft Windows and Office can be surprisingly difficult. Microsoft frequently changes its download portals, restricts access to older operating system versions, and often requires active product keys just to download installation media.
Navigate to the official URL: https://tb.rg-adguard.net/public.php .