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. *Go to aka.ms/systemrequirements for compatible versions of Windows 11, Windows 10 and macOS and for other feature requirements.How to activate one-time purchase Office Home & Business (ex: Office 2021, or 2019) Compatible with Windows 11, Windows 10, or macOS*.
The apps can be installed on multiple devices, including PCs, Macs, iPads, iPhones, Android tablets and Android phones. Microsoft 365 is a subscription that comes with premium apps like Word, Excel, PowerPoint, OneNote, Outlook, Publisher and Access (Publisher and Access available on PC only). What's the difference between Microsoft 365 and Office 2021? A one-time purchase installed on one PC or Mac for use at home or work. It includes Word, Excel, PowerPoint and Outlook for Windows 11 and Windows 10. Office Home and Business 2021 is for families and small businesses who want classic Office apps and email.