Microsoft 365 is a subscription service that includes desktop Office 2019 products (Word, Excel, and PowerPoint) and Office online apps. This post will walk you through signing up for the service and downloading the applications to your computer. This article's instructions are for Microsoft 365 Home on Windows 10 devices. So here are some steps to solve how to install office 365 on windows 10. Then visit the official site, www.office.com, and choose Sign in if you aren't already logged in. Next, log in using the account you used to install this version of Office. This account can be a Microsoft account, work or school account, or a combination of the two. After logging in, go through the procedures that correspond to the kind of account you used.