Microsoft released Windows 10 four weeks ago today, and now the company is providing a fresh update on its upgrade figures. 14 million machines had been upgraded to Windows 10 within 24 hours of the operating system release last month, and that figure has now risen to more than 75 million in just four weeks. Microsoft has been rolling out Windows 10 in waves, as a free upgrade for Windows 8 and Windows 7 users. While it's difficult to compare exact figures between Windows 10 and Windows 8, Microsoft "sold" 40 million licenses of Windows 8 a month after its debut. It took Microsoft six months to get to 100 million licenses of Windows 8, and it's clear the free aspect of Windows 10 is obviously driving higher adoption rates.

An encouraging start for Windows 10

Microsoft's Windows marketing chief Yusuf Mehdi revealed the figure today, alongside some more interesting statistics about Windows 10. More than 90,000 unique PCs or tablet models have been upgraded to Windows 10 in 192 countries. That's nearly every country on the planet. Xbox One owners have streamed nearly 122 years of gameplay to Windows 10 PCs. More importantly, Mehdi revealed that the Windows Store for Windows 10 has seen six times more downloads per device than Windows 8. That's an encouraging start to Microsoft's universal apps goal.

While Microsoft has been rolling out Windows 10 in waves, there are ways to avoid the wait. There's even methods to clean install Windows 10 if you want to remove the cruft of your previous version of Windows and wipe out the upgrade. If you haven't upgraded to Windows 10 yet, you can read our review here to get a closer look at Microsoft's latest operating system.