AOL
In its latest beta build of the Windows 10 Creators Update, Microsoft has slipped in a new feature that could make your PC either safer or more irritating, depending on your point of view. If you try to install a Win32 (desktop) app, it'll either pop up a warning that "the app you're installing isn't from the Windows Store" or completely block it, depending on the level of security you select. When enabled, you can still install Windows Store and Universal Windows Platform (UWP) apps with no warning.
The feature, noticed by Twitter user @vitorgrs (below) is disabled by default, so it won't bother you unless you search for it and turn it on. It might be incredibly annoying to power users, as it would block Photoshop, Firefox and other desktop apps. it could be a boon for your parents or grandparents, though, as it'll stop them from accidentally installing bloatware or other problematic apps.
Starting with 15042, you can block installation of Win32 apps on ANY edition. Even Enterprise. pic.twitter.com/MHzpBkNLE3
— Vitor Mikaelson