While the idea of a free "lifetime" license key for Microsoft Office 2021 Professional Plus is a common internet search, it is almost exclusively a story of scams and high-risk pitfalls rather than a legitimate giveaway. Professional Plus is a business-only volume license not sold to individual consumers at retail. The "Too Good to be True" Story
If you see a website promising free lifetime activation, close the tab. Your computer will thank you.
SYSTEM_ADMIN: No. You used a corporate key. A "Lifetime" key. In the Terms of Service, paragraph 4, section C, it states that the "Lifetime" license entitles the holder to software updates and direct administrative support for the duration of the natural lifespan of the registered entity.
Given the risks associated with acquiring a free lifetime license key, the recommended approach is to purchase Microsoft Office 2021 Professional Plus through official channels. Microsoft offers various purchase options, including a one-time purchase for personal use and subscription plans like Microsoft 365 for businesses and individuals who prefer access to the latest versions of Office apps and other benefits.