Microsoft has officially ended mainstream support for its Windows 10 operating system as of October 14, 2025, a decade after its initial launch. This cessation of support means that computers running on Windows 10 will no longer receive free security updates, non-security updates, or assisted support, making them more vulnerable to security risks like viruses and malware. Microsoft is urging users to upgrade to Windows 11 to ensure their devices remain secure. For users with PCs that do not meet the system requirements for Windows 11, Microsoft is offering an Extended Security Updates (ESU) program. This paid service will provide security updates for Windows 10 for up to three years, though it will not include new features or technical support. The end of support for such a widely-used operating system is a significant event, impacting millions of users worldwide and raising concerns about potential e-waste from discarded, incompatible hardware.