AdDuplex: Windows 10 version 21H1 is now on over 26% of PCs, Windows 11 makes its debut

Windows 10 May 2021 Update written right above four blue lines

After a gap of a couple of months, AdDuplex has released its Windows version usage report for the month of July. The report is collected from 5,000 Microsoft Store apps that are running the AdDuplex SDK v.2 or higher, and around 60,000 Windows PCs were sampled for this report. This month’s highlight is the debut of Windows 11, which was formally announced in June. As for Windows 10, version 21H1 that was released in May is now running on over 26% of Windows machines.

Just like the October 2020 Update, the Windows 10 May 2021 Update was an enablement package that light up new features in the OS. The underlying codebase for 21H1, however, is identical to versions 20H2 and 2004, meaning that the three most recent versions are serviced with the same cumulative updates. It is, therefore, not surprising to see that the rollout of the latest version has been faster than the previous versions has seen. This is only expected to increase as version 2004 begins to reach the end of support for consumer SKUs.

A pie chart showing usage shares of different Windows 10 versions and Windows 11

With Windows 10 21H1 now on more than 26% of PCs, the three latest versions of the OS account for close to 88% of usage share. The title for the most famous version of Windows 10 is retained by version 20H2 at 36.3%, followed by version 2004 at 24.6%. Windows Insiders running Windows 11 in the Dev channel account for close to 1% of total devices.

Windows 10 version 21H2 is also slated to be an enablement package. However, with Windows 11 expected to begin rolling out later this year, it will be interesting to see how the usage share changes, since there are still questions about the pace of the rollout and what the final hardware specifications will be.

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