Windows 10 was made available for download via MSDN and TechNet, as a free upgrade for retail copies of Windows 8 and Windows 8.1 users via the Windows Store, and to Windows 7 users via Windows Update.
So existing Windows 7/8/8.1 users can upgrade to Windows 10 for free. Windows 10 Upgrade Paths and List of Deprecated Features. When Microsoft announced about this free upgrade offer, the company also indicated that pirated or non-genuine Windows users will also be able to upgrade to Windows 10 for free. This news came as a surprise and caused .