In a fresh development, in contrast, the average number of vulnerabilities on systems running Windows 11 is only 652—about one-third the total of Windows 10. According to a fresh study by Lansweeper, there’s an average of 1,903 active security vulnerabilities on PCs running Windows 10.
As part of the ongoing story, in the US, many users still haven’t made the switch, with about 19.28% of all Windows PCs still running on Windows 10, according to Statcounter as of June 2026. In other words, upgrading to Windows 11 would be the smart security decision if you have that option, reports Neowin.
In a fresh development, the risks have only grown in the 18 months since then, and Windows 10 is expected to become increasingly more vulnerable to various threats with every month that passes. As early as January 2025, security experts warned that you shouldn’t wait to upgrade to Windows 11.
The report highlights that since Microsoft no longer provides updates for Windows 10—only security patches via the Extended Security Updates program (which, incidentally, was extended by another year recently)—Windows 11 has officially replaced the previous operating system.
The report highlights that so if you decide to stick with Windows 10, at least sign up for the free ESU program, which will give you access to the most recent Windows 10 security updates until October 12th, 2027.
Industry observers note that data privacy experts, for example, advise against switching to Windows 11 and recommended sticking with Windows 10 for as long as possible. This advice is primarily aimed at businesses and organizations, but also applies to home users. Not everyone is a fan of Windows 11.
As part of the ongoing story, this article originally appeared on our sister publication PC för Alla and was translated and localized from Swedish.