Windows 10 reached its end-of-support date on October 14, 2025, concluding monthly security updates for over 1 billion PCs. Users with incompatible devices cannot upgrade to Windows 11 via Windows Update and are advised to purchase new hardware. Microsoft will offer Extended Security Updates (ESUs) for Windows 10 on a subscription basis for three years post end-of-support, with costs varying for consumers, educational institutions, and businesses. Users can also consider buying new PCs, renting a virtual PC through Windows 365, upgrading incompatible hardware to Windows 11 using specific methods, switching to a Linux distribution or ChromeOS Flex, or continuing to use Windows 10 without support, which poses security risks.