Before you activate Office applications, Windows OS must be activated on your computer.
Note: If you had activated Office already and you need to reinstall it, please click here. Before activating Office, please check below Office regulations from Microsoft. This article describes how to activate a one-time purchase version of Office Home & Business (ex: Office 2021, 2019, etc.), and you also can refer to the Microsoft’s Activate Office topic. How to activate one-time purchase Office Home & Business (ex: Office 2021, or 2019)
