The Hackr

Windows 10 Upcoming Security Feature Blocks Installation of Win32 Apps

Microsoft will allow administrators to block the installation of Win32 applications on their computer with Windows 10 build number 15042 in thier upcoming updates.

This new feature, spotted by Vitor Mikaelson, will be available for all Windows 10 editions. And it will come with a corresponding configuration option in the Windows 10 Apps & Features settings screen.

Win32, also known as the Windows API, is the core technology that used to power the entire app ecosystem in older Windows versions, up until Windows 10.

Then Microsoft introduced the Universal Windows Platform (UWP) apps which work across all modern Microsoft products, from phones to gaming consoles, and are more secure. They work in their own, self-contained security sandbox, preventing the app from reaching core Windows functions.

Microsoft continued to support older Win32 apps after the release of  Windows 10. So as not to kill its entire apps ecosystem in one blow, something that would have been catastrophic and deterred many users from migrating to Windows 10.

Microsoft still sees Windows’ future in UWP apps. However, Earlier this months, ISOs for Windows Cloud leaked online, that works only with Windows Store (UWP-compatible) apps. It is similar to how Windows RT worked.


  1.  The advantage of this Win32 app blocking feature is its security implications.
  2.  Unsandboxed Win32 apps are the main source of viruses and malware on Windows 10.
  3.  This upcoming feature can be very useful for system and network administrators in enterprise environments.
  4.  Having this feature turned on only blocks the installation of Win32 apps, and not the ability to run Win32 apps.
  5.  Sysadmins can install verified Win32 apps, turn on the installation filter, and still allow users to run Win32 apps

This Win32 installation blocking system will be coming in April 2017 with Windows 10 Creators Update.


It was a hobby I got into a long time ago, hacking cameras. And I am here making posts @TheHackr today!

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