In 2012, for example, Microsoft said it took Windows 8 a month to crack the 40-million-licenses-sold mark. In 2010, a little more than four months after Windows 7 debuted, the developer said 90 million licenses of that OS had been sold.
StatCounter's data supports the idea that Windows 10's start has been a record-setter for Microsoft. Windows 10's usage share after 30 days, for instance, was 37% higher than that of Windows 7 after its first 30 days of availability.
Microsoft has set a goal of putting Windows 10 on 1 billion devices within three years: The 75 million represents 7.5% of that target.
It's a good start.
Data: StatCounter .Windows 10 usage growth has settled into a pattern the last two weeks, with the steepest gains on the weekends.
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