If you do not have a key, avoid "free key" lists found online, as these are often invalid or pose security risks. Instead, consider these official options:
: Use Microsoft 365 Online for basic document editing in your browser at no cost. Where to enter your Office product key - Microsoft Support Microsoft word 2020 activation key
: Subscribe to Microsoft 365 for ongoing updates and cloud storage; these typically activate automatically via your login and do not require a manual key entry. If you do not have a key, avoid
: Go to Office.com/setup or Microsoft365.com/setup . Sign in with your Microsoft account and enter your 25-character key to link it to your account. : Go to Office
: Buy a standalone license for Office 2021 from the Microsoft Store.
To activate your software, you generally need a unique 25-character product key purchased from an authorized retailer or directly from Microsoft . How to Find or Use Your Activation Key