After nearly a month since its release, just how well is Windows 10 really doing?
Earlier this week Microsoft revealed that more than 75 million devices are now running Windows 10. That includes more than 90,000 different PC or tablet models - even some devices manufactured as long ago as 2007.
Microsoft has previously said Windows 10 had 14 million downloads in the first 24 hours. Big, big numbers, but how do they stack up compared to previous versions of Windows?
Back in 2012, Microsoft said it sold 40 million Windows licences in the first month that Windows 8 was on sale, and that is had sold four million upgrade licences in the first three days (licences are slightly different to downloads but the best metric we have). In contrast, in 2009 Microsoft sold 60 million Windows 7 licences in the first two months it was on sale