Microsoft is revealing today that 400 million active machines are now running Windows 10.

 

Back in July, Microsoft tempered its Windows 10 expectations a touch, noting that its initial projection of mid-2018 for one billion active devices was probably a bit over-ambitious. That pronouncement came shortly after the company announced that its OS had hit 350 million machines (after hitting 300 million in May) — and roughly a fortnight before ending its free upgrade period.

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