September 13, 2016 — KB3189866 (OS Builds 14393.187 and 14393.189)

This update includes quality improvements and security fixes. No new operating system features are being introduced in this update. Key changes include:

• Improved reliability of Windows Shell, map apps, Internet Explorer 11, and Microsoft Edge.

• Addressed issue causing push-button reset to not work correctly and roll back on devices with language set to any of the Unicode languages.

• Addressed issue causing devices to crash after disconnecting an e-reader that was attached to the device.

• Addressed issue causing devices to not recognize a Secure Digital (SD) card if it is inserted and removed multiple times.

• Addressed issue causing some apps to not respond to the commands in the app bar in Windows 10 Mobile.

• Addressed issue that sometimes blocks alarm notifications in Windows 10 Mobile.

• Improved support for using the camera app in Windows 10 Mobile Enterprise.

• Addressed additional issues with rendering 4K resolution, missing Start menu tiles when running on battery, Internet Explorer 11, Microsoft Edge, Bluetooth compatibility, graphics, display rotation, app compatibility, Wi-Fi, Feedback Hub, Miracast, Windows Shell, revised daylight saving time, and USB.

• Security updates to Microsoft Edge, Internet Explorer 11, Microsoft Graphics Component, Windows kernel, and Adobe Flash Player.

For more info about the complete list of affected files, see KB3189866.