Windows 10 Version 21H1 Jumps to 38 Percent Usage

Posted on September 28, 2021 by Paul Thurrott in Windows 10, Windows 11 with 11 Comments

The latest version of Windows 10 is now running on 38.1 percent of PCs, compared to 36.1 percent for its immediate predecessor.

“More than 38 percent of [Windows 10- and 11- based] PCs run [Windows 10 version] 21H1 and 1.3 percent are already on Windows 11,” the latest AdDuplex report notes, adding that the data is based on a survey of about 60,000 Windows 10- and 11-based PCs.

Windows 10 version 21H1 has seen the biggest jump since the last report, from July. (AdDuplex didn’t publish a Windows 10 usage report in August.) At that time, it was on just 26.6 percent of PCs. Windows 10 version 20H2 usage, meanwhile, declined almost imperceptibly, from 36.3 percent in July.

Oddly, Windows 11 usage hasn’t moved much at all, either: It was at 0.9 percent usage in July. It now accounts for just 1.3 percent usage just ahead of its October 5 launch.

Join the discussion!


Don't have a login but want to join the conversation? Become a Thurrott Premium or Basic User to participate

Comments (11)

11 responses to “Windows 10 Version 21H1 Jumps to 38 Percent Usage”

  1. madthinus

    Looking at 2004, 20H2 and 21H1 which is basically all the same build, that accounts for 88.7%

  2. spacein_vader

    Wonder what % of die hards are on 7, 8/8.1 or even the real masochists on XP.

    • LocalPCGuy

      In the past year I've had two people bring in Windows XP towers. Both still ran well. Neither were infected, as they users had a good AV and did the same things on their PC's every day, no wandering off or clicking on anything. They were having troubles with browser compatibility. Both were upgraded to newer, but used, Window 10 machines. When Windows 10 official support ends I'll install It works well at keeping the gremlins away.

      There are very few old PCs alive. But, some people do a nice job of maintaining what they have and no free money to buy something else.

      • spacein_vader

        I've got some XP era hardware in use, but I've stuck Linux on it. Much more secure and I suspect if you're just using it for browsing and some light word processing etc you'd never notice the difference if you picked a distro with a windows-similar UI.

      • BobBuilder

        Clearly you have no idea about security then. Having a good AV on an OS with now over 300 security flaws isn't going to keep you protected. Update to the latest version of Windows or use Linux.

  3. winner

    WAASS - Windows as a slow service.

  4. JH_Radio

    My Surface Pro first generation is on 20H2 if I'm not mistaken. I haven't been a seeker this is just what it upgraded to.

    This X99 desktop from Asus with a brand new M.2 SSD now I upgraded it from Windows 7 about a month ago and its now on Windows 10 21H1.

  5. brettscoast

    The take up of Windows 11 after launch should make fascinating viewing, I think its going to be low and slow.

    • ezzy

      Given the hardware requirements that's pretty much guaranteed.

      Much ado will be made about it, dire predictions of Microsoft's impending bankruptcy, etc...

      The truth is the Windows 10 and 11 are expected to coexist for some time. They have to. That is something that probably hasn't happened since Win 95 was released.

  6. omen_20

    Put my expensive work laptop in the 4.3% with 1909. My older machine was on a later build, and my decade old home laptop is on the latest 21H1.

    For some reason though Dell can't get this i9 32GB machine past 1909. If it weren't locked down by my company I'd read the failure logs.. but it seems like Dell should be working with Microsoft to ensure this doesn't happen.