In our Store, you can purchase an original Windows license key that will activate your Software. We promised the key is 100% valid. The product key will be in the confirmation email you received after buying it. It’s a 25-character code, and it will immediately activate your current copy of Windows 7, Windows 8/8.1, Windows 10 & Windows Server 2016/2012 installation. If you upgraded to Windows 10 for free from Windows 7 or Windows 8.1, you’ll have a digital license instead of a product key.