Buy genuine Microsoft Windows 10 Professional lifetime key for 1 PC and upgrade to the most popular Windows OS.
This product includes a brandnew Windows 10 Pro license key for both 32-bit and 64-bit versions with multi-language.
The activation key works on Windows PC, but NOT on Mac.
Windows 7/8 and Windows 10 Home CANNOT be directly upgraded to Windows 10 Professional by changing product key in Windows system, so a clean installation is required.
Official download link: Windows 10 Professional. More information about download and installation you can find in the e-mail that will be sent immediately after purchase, please also check the spam or junk mail folder.