In a scathing editorial in The Guardian, Epic Games cofounder Tim Sweeney spoke out about Microsoft's Universal Windows Platform (UWP) initiative, calling it a "fiasco" and "the most aggressive move Microsoft has ever made."
"With its new Universal Windows Platform (UWP) initiative, Microsoft has built a closed platform-within-a-platform into Windows 10, as the first apparent step towards locking down the consumer PC ecosystem," said Sweeney. "Microsoft has launched new PC Windows features exclusively in UWP and is effectively telling developers you can use these Windows features only if you submit to the control of our locked-down UWP ecosystem."
"PC UWP can, should, must, and will die as a result of industry backlash," Sweeney said.
UWP was launched as a way for developers to create applications that could run across several devices, including Windows 10-powered PCs, mobiles, tablets, and even Internet of Things devices. However, all UWP apps must be sold through the Windows Store where Microsoft takes a 30 percent cut. While not criticising the Windows Store itself—"I believe Microsoft has every right to operate a PC app store and to curate it how they choose," he said—Sweeney is accusing Microsoft of "unfairly disadvantaging" competing stores like Steam and Origin, as well as those who sell games directly to customers.
"The specific problem here is that Microsoft's shiny new 'Universal Windows Platform' is locked down, and by default it’s impossible to download UWP apps from the websites of publishers and developers, to install them, update them, and conduct commerce in them outside of the Windows Store," said Sweeney. "It's true that if you dig far enough into Microsoft's settings-burying UI, you can find a way to install these apps by enabling 'side-loading.' But in turning this off by default, Microsoft is unfairly disadvantaging the competition."