Windows10 Support Ending Puts Millions of PCs at Risk

As Microsoft ends support for Windows 10 on October 14, 2025, nearly 400 million PCs worldwide face potential security threats. Despite the benefits that Windows 11 offers, including enhanced security features, a significant number of PCs remain unable to upgrade due to stringent hardware requirements. This hardware barrier has prompted concern among users and cybersecurity experts alike.

Impact and Alternatives

Windows 10, once the flagship operating system, still powers approximately 41% of all PCs. With Microsoft's mandatory specs for Windows 11, many older devices are excluded from upgrading. The Public Interest Research Group (PIRG) describes the situation as staggering, noting that numerous functional PCs are relegated to obsolescence because they cannot meet new hardware criteria.

The secondary market response has been a spike in the promotion of alternative operating systems, such as Linux and Chromebook OS, for devices that cannot transition to Windows 11. These alternatives, while viable for some, may not suit all users' needs, depending on software requirements and compatibility issues.

Security Risks Abound

The termination of Windows 10 support means these systems will no longer receive security patches, leaving them vulnerable to exploits. Ransomware attacks and other malicious activities tend to focus on systems that lack the latest security updates. Cybersecurity specialists are warning that the endpoint vulnerabilities will quickly become routine targets for hackers.

StatCounter data highlights this risk, noting an increase in users employing legacy operating systems, with nearly 140 million devices running an OS that Microsoft retired in 2020. Without timely patches and updates, these systems become appealing targets for cybercriminals eager to exploit known vulnerabilities.

Mitigation Strategies

To combat the looming risks, Microsoft offers an Extended Security Updates (ESU) program designed to provide critical updates post the official end of support. Organizations and users who wish to stick with Windows 10 have this option, though it requires enrollment and potentially additional fees. For those who seek to avoid these costs or the risks, upgrading to newer hardware capable of running Windows 11 may be a more sustainable long-term solution.

In conclusion, though the road ahead poses challenges for many Windows 10 users, the clarity of available options—whether through ESU, alternative OS adoption, or hardware upgrades—presents a pathway to maintaining security and performance.

Update: 17 Jun 2026