The numbers speak for themselves: Windows 11 now runs on nearly three in every four Windows desktop computers worldwide. According to StatCounter, the operating system reached a 72.78% market share in February 2026, a jump of more than 10 percentage points in a single month. Windows 10, once commanding more than 80% of the market during its peak years, has slipped to just 26.27%.
The acceleration is striking precisely because it comes after a prolonged period of consumer resistance. As recently as late 2025, Windows 11 sat at just over 50% global share. The migration that Microsoft had been pressing for years is now, finally, gathering genuine momentum.
A Slow Burn, Then a Surge
Windows 11 launched in October 2021, but its path to majority status was anything but swift. Microsoft launched Windows 11 in October 2021, but it took several years for it to overtake Windows 10 in popularity; in fact, it wasn't until several months after the company announced it was ending support for the older operating system that it finally gained the majority from its predecessor. That milestone, crossing the 50% threshold, only arrived in June 2025, according to StatCounter data reported by multiple outlets.
The catalyst for the shift was a hard deadline. Microsoft formally ended mainstream support for Windows 10 on October 14, 2025, meaning no more free security updates for mainstream Windows 10 installations after that date, except for devices enrolled in Extended Security Updates. For most households and many smaller businesses, that deadline meant an unambiguous choice: upgrade or accept the growing security risk of an unpatched operating system.
Without vendor-supplied security and quality updates, Windows 10 endpoints become increasingly attractive targets for attackers, and non-compliance risks grow for regulated industries. That risk calculus, more than any feature appeal, appears to be what finally moved the numbers.
What Held the Migration Back
For years, the story of Windows 11 adoption was one of deliberate stalling. Consumers saw little reason to change an operating system that worked perfectly well. Enterprises pointed to compatibility testing and budget cycles. And a significant cohort of users faced a more fundamental problem: their hardware simply was not eligible.
The biggest issue that stopped many users from upgrading was Windows 11's stringent hardware requirements, which prevented millions of still-working PCs from upgrading. Chief among these was the requirement for a Trusted Platform Module (TPM) 2.0 chip, a security component that many older machines lacked entirely. This requirement is the practical reason millions of PCs that ran Windows 10 perfectly well may be denied the upgrade: the barrier is not only performance or storage, it is platform security and firmware capability. Many relatively recent laptops and desktops shipped with firmware options that can be enabled to meet Windows 11 requirements, but others, particularly machines built before 2018, may lack the necessary support entirely.
The e-waste dimension of this deserves consideration. Pushing users toward new hardware when their existing machines remain functional is not cost-neutral; it has environmental and financial consequences that fall hardest on lower-income households and small businesses already stretched thin.
The Counterargument Worth Taking Seriously
Critics of Microsoft's hardware floor have a point, but so does the security rationale behind it. The TPM and Secure Boot requirements reduce the attack surface for boot- and firmware-level exploits and enable hardware isolation features that materially improve resilience. In an era of escalating ransomware and supply-chain attacks, these are not trivial concerns.
Security researchers have consistently argued that an enterprise running unpatched Windows 10 endpoints is not simply gambling with one employee's data. The enterprise has a much larger blast radius; enterprise companies are more likely to be targeted by malicious actors because of their deeper pockets, and a compromise of a single PC can cascade into facilitating the compromise of thousands of PCs. That is a genuinely difficult trade-off to dismiss.
The surge in February 2026 also appears to be enterprise-driven rather than a sudden rush of consumer enthusiasm. The rise in Windows 11's market share is more likely down to administrators pressing the upgrade button or a long-planned enterprise replacement wave rather than a sudden surge of new purchases. PC gamers have led the consumer charge: according to the latest Steam Hardware and Software Survey results for November 2025, Windows 11's market share among PC gamers on the Steam platform was 65.59%, while Windows 10's share had dropped to 29.06%.
What Comes Next
Even with the February jump, the transition is far from complete. The roughly 26% of Windows users still on Windows 10 represents hundreds of millions of devices globally. Some of those users will eventually upgrade through natural PC replacement. Others will stay put, running out-of-support software indefinitely, a pattern seen with Windows 7 long after its end-of-life date passed.
Market-share snapshots will continue to fluctuate month to month, driven by OEM shipment cycles, retail specials, and periodic enterprise batch upgrades, but the secular trend favours Windows 11 adoption overall. Microsoft's next challenge is maintaining trust. Microsoft must manage the update quality story: upgrade fatigue or high-profile regressions can slow adoption if not handled carefully. Trust in update reliability matters as much as feature set.
For Australian businesses still sitting on Windows 10, the calculus is straightforward. The security exposure from running an unsupported OS is real, and the Australian Cyber Security Centre's Essential Eight framework already requires patching as a baseline control. Falling behind on operating system support is not merely a technical inconvenience; it is a compliance issue.
The Windows 11 adoption story ultimately reflects a broader tension in technology policy: the right of software vendors to set security standards versus the legitimate interests of users who cannot or will not upgrade on a corporation's preferred timeline. Microsoft's position is defensible on security grounds. The pace at which it pushed that position, and the e-waste it generated along the way, is where reasonable people can disagree. What is not in dispute is the direction of travel. The market data is unambiguous: Windows 11 has arrived, and Windows 10's long farewell is finally drawing to a close.