26 Percent of Windows 10 PCs are Running 21H1

Posted on July 27, 2021 by Paul Thurrott in Windows 10, Windows 11 with 3 Comments

The latest AdDuplex report shows that 26 percent of Windows 10 PCs are on the latest version, 21H1. And that 0.9 percent are already on Windows 11.

“More than 26 percent of PCs run the 21H1 update of Windows [10] and 0.9 percent are already on Windows 11,” the report explains, noting that the data is based on a survey of about 60,000 Windows 10 and 11 PCs. “[The] 2020-21 versions of Windows 10 are now on more than 88 percent of Windows 10 PCs surveyed.”

I can’t find AdDuplex reports for May or June, so the last comparable month is April, when Windows 10 version 20H2 hit 40 percent usage share. Since then, things have shifted a bit with the release of Windows 10 version 21H1 and the first Windows 11 previews.

This month, Windows 10 version 20H2 is still the most-used version, but its share has fallen to 36.3 percent. Version 21H1 is in second place. And version 2004 brings up the rear with 24.6 percent usage.

And that 88 percent figure? Unchanged since April. Interesting.

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Comments (3)

3 responses to “26 Percent of Windows 10 PCs are Running 21H1”

  1. DBSync

    And how many are on Windows 7 or 8?

    • hrlngrv

      Don't expect AdDuplex to care about that.

      FWIW, the not particularly reliable StatCounter shows Windows 10 in total a bit under 79% of all Windows versions usage. Add Windows 11 Insiders, and it's likely under 80%. Roughly 3.5% are still using the still in support Windows 8.1. Out of support versions make up the rest.

  2. JH_Radio

    My Surface Pro first generation is on Windows 10 21H1. Runs pretty good still. and I'll have to toss it in 4 years along with my Lenovo 6th gen Think Pad Carbon. GRRR.