This version of Windows works only on newly installed Windows. If you purchase this version, you will need to re-install your Windows.
Microsoft Windows 10 Professional is your partner in productivity. Get an Operating System that starts up and resumes fast, has more built-in security to help keep you safe, and is designed to work with the software and hardware you already own. Windows 10 Pro is a modern OS that comes from a long line of popular, functional releases from Microsoft. Windows is perfect for gamers, office computers, and everything in between.
Organize everything with great built-in apps like Maps, Photos, Music, Mail & Calendar, and Movies & TV. Windows 10 Pro helps you store what you need, find it when you need it, and clean things up to save space. And your files will never be lost thanks to automatic backup from Microsoft OneDrive. With Windows 10 Pro, you're never far from what you need.
This version of Windows is designed for increased business functionality. It offers support for encryption, remote log-in, and virtual machine creation. Windows 10 Professional is a perfect option for any and all business computing needs. It even includes Cortana, your personalized digital assistant.