Enter your 25 alphanumeric product codes or enter the required fields and click Next. On the Account page, click the Install Office button on the right. side of the window. This will open another page. This will open a pop-up window, click Install to start the download. Now depending on the browser you are using, save the downloaded installer and run it. Once the installer is downloaded, the installation will begin.microsoft365.com/setup Wait for it to finish. It will take a few minutes. Once the installation is complete, a screen with animation and a close button will be displayed.