April 25, 2017—KB4016240 (OS Build 15063.250)

Improvements and fixes

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

Addressed issue where VMs might experience loss in network connectivity while provisioning IP addresses.
Addressed issue that does not initiate a remote ring on the device when RemoteRing Configuration Service Provider (CSP) is used.
Addressed issue where a memory leak occurs in Internet Explorer when hosting pages containing nested framesets that load cross-domain content.
Addressed issue where Internet Explorer 11 does not save JavaScript files when exporting to an MHT file.
Addressed issue that causes users to get logged out from Web applications intermittently.
Addressed issue with a very dim internal monitor that may occur when booting with the external monitor only and then switching to the built-in panel only.
Addressed issue where running Win32 Direct3D applications or games in full-screen exclusive mode causes the system to become unresponsive when resuming from Connected Standby.
Addressed issue where when upgrading to Windows 10, version 1703, with the system language set to Chinese, the progress page displays geometric shapes instead of the correct localized strings.
Addressed issue that prevents the lock screen from being disabled using Group Policy on Professional SKUs.
Addressed issue in Windows Forms configuration options, which causes antivirus applications to stop working at startup.
Addressed additional issues with compatibility, Internet Explorer, and Microsoft Edge.

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

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. To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

File informationFor a list of the files that are provided in this update, download the file information for cumulative update 4016240. If you're installing a Windows 10 update for the first time, the package size for the x86 version is 215 MB and the package size for the x64 version is 341 MB.