Download Office 2021 Pro Plus Retail (English).

Once redeemed, navigate to the Services & Subscriptions section of your Microsoft Account Dashboard .

Once downloaded, right-click the file and select Mount to open it as a virtual drive.

If you already have a product key, the most direct method is via the Microsoft Setup Portal.

Open the virtual drive and double-click Setup.exe to begin the installation. 3. Advanced Method: Office Deployment Tool (ODT)

Click Install , and in the options dropdown, ensure you select 64-bit before downloading the installer. 2. ISO/IMG Offline Installer

For an offline installation using an image file (like ProPlus2021Retail.img ), you can use Microsoft's Content Delivery Network (CDN) links.