Microsoft today announced that Windows 10 is now installed on over 400 million devices. It took the latest and greatest operating system from the company about 14 months to hit the new milestone.

According to a report by ZDNet, at Microsoft’s Ignite conference in Atlanta, company’s officials said that Windows 10 was running on 400 million active devices as on September 26.

VentureBeat reports that Windows 10 was installed on over 75 million PCs in its first four weeks. It passed 110 million devices after 10 weeks, 200 million in under six months, 270 million after eight months, 300 million after nine months, and then 350 million after 11 months. Microsoft was aiming for 1 billion devices running Windows 10 “in two to three years,” but recently the company backpedaled on that goal.

The devices included in this figure are not just computers but also tablets, smartphones, Xbox One consoles, and Holo Lens headsets.

Credit: VentureBeat