Complaining about Windows 11 is a popular sport among tech enthusiasts on the Internet, whether you’re publicly switching to Linux, publishing guides about the dozens of things you need to do to make the OS less annoying, or getting upset because you were asked to sign in to an app after clicking a sign-in button.

Despite the negativity surrounding the current version of Windows, it remains the most widely used operating system on the world’s desktop and laptop computers, and people usually prefer to stick to what they’re used to. As a result, Windows 11 has just cleared a big milestone—Microsoft CEO Satya Nadella said on the company’s most recent earnings call (via The Verge) that Windows 11 now has over 1 billion users worldwide.

Windows 11 also reached that milestone just a few months quicker than Windows 10 did—1,576 days after its initial public launch on October 5, 2021. Windows 10 took 1,692 days to reach the same milestone, based on its July 29, 2015, general availability date and Microsoft’s announcement on March 16, 2020.

That’s especially notable because Windows 10 was initially offered as a free upgrade to all users of Windows 7 and Windows 8, with no change in system requirements relative to those older versions. Windows 11 was (and still is) a free upgrade to Windows 10, but its relatively high system requirements mean there are plenty of Windows 10 PCs that aren’t eligible to run Windows 11.

Windows 10’s long goodbye

It’s hard to gauge how many PCs are still running Windows 10 because public data on the matter is unreliable. But we can still make educated guesses—and it’s clear that the software is still running on hundreds of millions of PCs, despite hitting its official end-of-support date last October.

Statcounter, one popularly referenced source that collects OS and browser usage stats from web analytics data, reports that between 50 and 55 percent of Windows PCs worldwide are running Windows 11, and between 40 and 45 percent of them run Windows 10. Statcounter also reports that Windows 10 and Windows 7 usage have risen slightly over the last few months, which highlights the noisiness of the data. But as of late 2025, Dell COO Jeffrey Clarke said that there were still roughly 1 billion active Windows 10 PCs in use, around 500 million of which weren’t eligible for an upgrade because of hardware requirements. If Windows 11 just cleared the 1 billion user mark, that suggests Statcounter’s reporting of a nearly evenly split user base isn’t too far from the truth.