In case you are already running Build 10240 on your Windows 10 PC, you may like to check for a security update that Microsoft has pushed. The security update KB3074663 not only fixes a vulnerability but also brings some changes to “enhance the functionality of Windows 10 through new features and improvements”.

KB3074663 changelog:


This security update resolves a vulnerability in Microsoft Windows. The vulnerability could allow elevation of privilege if the Windows Installer service incorrectly runs custom action scripts. Additionally, this update includes non–security-related changes to enhance the functionality of Windows 10 through new features and improvements.

How to obtain and install the update
 Method 1: Windows Update
This update is available through Windows Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.