Download, Installation & Activation Instructions

Windows & Office Product Download, Installation & Activation Guides


Thank you for your purchase from Buy Key Now! To help you set up your product quickly, we've created easy-to-follow guides for every Windows and Microsoft Office product we offer.

Whether you’re on Windows or Mac, you’ll find everything you need to download, install, and activate your product below.


⚠️ Note: Only one version of Office or Windows should be installed per device. Please uninstall previous versions and back up your data before proceeding.


ℹ️ Windows Operating System Guides


1. Windows 11


2. Windows 10


3. Windows 8.1


4. Windows 7


ℹ️ Microsoft Office Product Guides


1. Office 2024


2. Office 2021


3. Office 2019


4. Office 2016


ℹ️ Need Help?


Our free 24/7 support team is ready to assist you:

⚠️ Include your order number and a screenshot of any error message for faster resolution.