Which of those would you like?
Office 2021 is compatible with Windows 10 (64-bit). To ensure a smooth installation and activation process, make sure your Windows 10 installation is up-to-date and meets the system requirements for Office 2021. Which of those would you like
: Open any Office app (like Word), go to File > Account , and select Activate Product or Change Product Key to enter your 25-character code. go to File > Account