Many employers and universities offer Microsoft Home Use Program (HUP). You can buy a full copy of Microsoft 365 for as little as $14.99/year through your company’s corporate agreement.
To clarify, "Pre-Activated" versions of Microsoft Office 2016 found on third-party sites are often modified, unauthorized copies that may contain security risks. Official Microsoft Office 2016 activation typically requires a associated with a Microsoft account. Microsoft Office 2016 Pre Activated
: Genuine "pre-activated" versions are usually limited to new PCs where an Office license is tied to the hardware. In these cases, you activate it by signing into a Microsoft account rather than entering a physical key. Risks of Unofficial Pre-Activated Software Many employers and universities offer Microsoft Home Use
: Installers often contain hidden viruses, trojans, or ransomware. Microsoft Office 2016 Pre Activated