Windows by the numbers: Windows 10 continues to cannibalize Windows 7

Windows by the numbers: Windows 10 continues to cannibalize Windows 7

Windows 10 last month continued to shove its ancestor out into traffic so it can steal Windows 7’s share.

According to analytics vendor Net Applications, Windows 10’s share of all personal computers climbed 1.4 percentage points – the third straight month of a gain of more than a point – and reached 52.4% in September. Windows 10’s part of all Windows PCs, meanwhile, climbed to almost 61%, the first time the OS cracked the 60% mark.

(The percentage of Windows PCs is larger than the percentage of all personal computers because Windows does not power every PC. In September, Windows ran 86% of the world’s machines. All but a tiny bit of the rest ran macOS, Linux or Chrome OS.)

In the zero-sum of the Windows universe, 10’s gain was Windows 7’s loss. During September, Windows 7’s share plunged by 2.2 percentage points to 28.2% of all PCs and 32.8% of the ones running Windows. The month’s decline was more than a third larger than August’s and the second largest in the past 22 months, beaten only by the astounding 3.6 points of July, which kicked off the three-months-and-counting shrinking of the elderly operating system.

Microsoft will retire Windows 7 on Jan. 14, 2020, or in a little more than three months.

Also on a continued downswing is the Windows 8 and Windows 8.1 combination. (The former is officially unsupported by Microsoft.) Together, they dropped seven-tenths of a percentage point, about three-fourths as much as in August and the second most for a single month in two years. Now at 4.1% of all PC operating systems and 4.8% of those running Windows, the 8/8.1 twosome is slowly expiring.


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