An estimated five million people in the UK could soon face heightened exposure to cyber threats when Microsoft officially stops updating Windows 10 next week, according to findings from consumer watchdog Which?.
Out of roughly 21 million UK users still running Windows 10, about one in four say they plan to keep using it even after support ends — leaving them open to viruses, malware, and other online attacks. The report also revealed that more than a third of those choosing not to upgrade are over the age of 55.
The end of Windows 10 support isn’t just a cybersecurity issue — it could also worsen global electronic waste. Millions of older computers are expected to become obsolete if they can’t handle newer software, prompting many people to replace their machines. Microsoft has urged customers to recycle unwanted devices responsibly.
Globally, hundreds of millions of users and businesses will be affected, with industry estimates suggesting around 13% of PCs currently running Windows 10 may need to be replaced entirely.
For most users, upgrading is relatively simple: compatible devices can install Windows 11, or users can purchase an additional one-year security extension for Windows 10 to buy more time before migrating.
However, Which?’s survey found that 39% of respondents planned to update, while 26% intended to continue using Windows 10 despite the risks.
“Millions may not realise how exposed they’ll become once Windows 10 support ends,” said Lisa Barber, editor of Which? Tech. “Now’s the time to check what version you’re using and take action — otherwise you could be putting your personal data at risk.”
In a separate statement, Yusuf Mehdi, Microsoft’s executive vice-president, confirmed that once support ends, “devices will be more vulnerable to cyber-threats, such as malware and viruses,” and warned that “some apps may lose functionality as the platform stops receiving updates.”
Key Details: What Windows 10 Users Need to Know
1. What’s changing?
Starting 14 October 2025, Microsoft will officially end all updates, security patches, and technical support for Windows 10. Computers will still function, but users may experience slower performance and increased exposure to malware. Microsoft describes Windows 11 as a more secure, modern replacement “designed with heightened protection by default.”
2. What’s the risk?
Without regular security updates, hackers are more likely to target outdated systems that share the same vulnerabilities. “Cybercriminals will take advantage of these weaknesses to steal personal data,” said Barber.
3. How to stay protected:
The best option is to upgrade to Windows 11, which is free for most users. PCs less than four years old typically meet the system requirements: at least 4GB of RAM and 64GB of storage. Which? offers an online tool to help users check if their computer is compatible. Alternatively, users can install a different operating system such as Linux or Chrome OS.
4. If your computer isn’t compatible:
Doing nothing leaves your device vulnerable. Microsoft is offering a one-year extended security update program, which keeps protection in place until 13 October 2026. If that’s not an option, purchasing a newer computer that supports the latest updates — potentially through trade-in or recycling schemes — may be the safest long-term solution.
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