Windows 10 will reach its end-of-support date on October 14, 2025, after nearly a decade since its launch in July 2015. PCs running Windows 10 will continue to function but will no longer receive security updates unless users opt for an Extended Security Updates (ESU) subscription. Without an ESU subscription, vulnerabilities discovered after October 2025 will remain unaddressed. Approximately 60% of PCs worldwide are still using Windows 10, and if the current upgrade pace continues, about 38% of PCs will still be running Windows 10 by the end of 2025, equating to over 500 million devices. Users with older hardware, corporate environments, and Windows 10 loyalists may face challenges in transitioning to Windows 11. Microsoft has provided options for extended support, particularly for enterprise customers, but general consumers may be less inclined to pay for updates.