October 10, 2017 - KB4042895 (OS Build 10240.17643)

Improvements and fixes

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

  • Addressed issue where the Universal CRT _splitpath was not handling multibyte strings correctly, which caused apps to fail when accessing multibyte filenames.
  • Addressed issue where the Universal CRT caused the linker (link.exe) to stop working for large projects.
  • Addressed issue where the MSMQ performance counter (MSMQ Queue) may not populate queue instances when the server hosts a clustered MSMQ role.
  • Addressed issue with the Lock Workstation policy for smart cards where, in some cases, the system doesn’t lock when you remove the smart card.
  • Addressed issue with form submissions in Internet Explorer.
  • Addressed issue with URL encoding in Internet Explorer.
  • Addressed issue that prevents an element from receiving focus in Internet Explorer.
  • Addressed issue with the docking and undocking of Internet Explorer windows.
  • Addressed issue with the rendering of a graphics element in Internet Explorer.
  • Addressed issue caused by a pop-up window in Internet Explorer.
  • Addressed issue where USBHUB.SYS randomly causes memory corruption that results in random system crashes that are extremely difficult to diagnose.
  • Security updates to Microsoft Windows Search Component, Windows kernel-mode drivers, Microsoft Graphics Component, Internet Explorer, Windows kernel, Microsoft Edge, Windows Authentication, Windows TPM, Device Guard, Windows Wireless Networking, Windows Storage and Filesystems, Microsoft Windows DNS, Microsoft Scripting Engine, Windows Server, Microsoft JET Database Engine, and the Windows SMB Server.

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, please refer to the Security Update Guide.

Windows Update Client Improvement
Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability. It will only be offered to devices that have not installed the most recent updates and are not currently managed (e.g., domain joined).


Known issues in this update

Symptom Workaround
After installing KB4042895, package users may see an error dialog that indicates that an application exception has occurred when closing some applications. This can affect applications that use mshtml.dll to load web content. The failure only occurs when a process is already shutting down and will not impact application functionality. Microsoft is working on a resolution and will provide an update in an upcoming release.

How to get this update

This update will be downloaded and installed automatically from Windows Update. To get the standalone package for this update, go to the Microsoft Update Catalog website.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4042895.


Source: https://support.microsoft.com/en-us/help/4042895




PC Direct download links for KB4042895 from Microsoft Update Catalog:

Download KB4042895 MSU for Windows 10 Version 1507 32-bit (x86) - 473.0 MB

Download KB4042895 MSU for Windows 10 Version 1507 64-bit (x64) - 883.4 MB