Please must remember your Microsoft account and password, otherwise, you won't be able to activate Office again if you forgot the account. Note: After signing-in, your product will be added to your Microsoft account, so that you can reinstall it later, or manage your new subscription without a product key. If you don’t have a Microsoft account yet, please select Create Account.

Please sign in with a Microsoft account ① to activate it. When you start an Office app for the first time, the system will inform “ You’ve got Office”.Note: ASUS computer bundles with Microsoft 365, and if you have a one-time purchase of Office Home & Business (ex: Office 2021, or 2019), please follow the following steps to upgrade Microsoft 365 to Office 2021. The following activation process takes Office 2021 as an example: (The Office authority will be linked to your Microsoft account.) You need to sign in with a Microsoft account.You need to activate Office within 180 days from the time the Windows OS is activated.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)

Word 2021 product key