March 12, 2019—KB4491736 Update for Windows 10 Mobile (OS Build 15254.556)

Improvements and fixes

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

• This build includes all the improvements from KB4489871.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

For more information about the resolved security vulnerabilities, see the Security Update Guide.

Known issues in this update

Microsoft is not currently aware of any issues with this update.

How to get this update

This update will be downloaded and installed automatically from Windows Update.