In essence, Windows 10 Cloud is an operating system very similar to Windows RT, as it’s developed to run only universal apps published in the Windows Store. In other words, Win32 apps are not allowed, unless Microsoft specifically whitelists them.
Windows 10 Cloud can be upgraded to Windows 10 Pro, which means that Win32 software support is already there, only that Microsoft locked it so that only users paying for the upgrade can access it.
A post on woafre.tk reveals that Windows 10 Cloud is actually employing UMCI to block unsigned applications from launching, which means that the operating system restricts access to some features, such as cmd, powershell, cscript, regedit, reg, which could be used to bypass the limitation.
But what the jailbreak actually does is to skip the restriction using the Windows Subsystem for Linux, as the built-in Bash can be used to run Win32 apps on Windows 10 Cloud. As you can see in the screenshot included in the article, the developer of the jailbreak managed to launch Google Chrome on Windows 10 Cloud, even though it’s a Win32 program that’s not whitelisted by Microsoft.
Microsoft could block it before launch
Now, since Windows 10 Cloud is still not official, there’s a good chance that Microsoft blocks this hack before the operating system becomes available to users across the world, but it’s very clear that the way this new SKU was developed leaves the door open for jailbreaks that could unleash its full capabilities.
Without a doubt, even if Microsoft blocks the hack and finds other ways to restrict access to Win32 software, it’s probably just a matter of time until someone else develops a way to get around these limitations.
In the meantime, it remains to be seen when exactly Microsoft announces Windows 10 Cloud, as it’s not yet clear if this SKU is supposed to arrive with the Creators Update or not.
[Source:-Softpedia]