October 10, 2017—KB4042895 (OS Build 10240.17643)

Applies to: Windows 10

Improvements and fixes


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

  • Addressed issue in which the Universal CRT _splitpath was not handling multibyte strings correctly. This caused apps to fail when accessing multibyte filenames.

  • Addressed issue in which the Universal CRT caused the linker (link.exe) to stop working for large projects.

  • Addressed issue in which the MSMQ performance counter (MSMQ Queue) may not populate queue instances if the server hosts a clustered MSMQ role.

  • Addressed issue that affected the Lock Workstation policy for smart cards in which, in some cases, the system didin't lock when you removeed the smart card.

  • Addressed issue that affected form submissions in Internet Explorer.

  • Addressed issue that affected URL encoding in Internet Explorer.

  • Addressed issue that prevented an element from receiving focus in Internet Explorer.

  • Addressed issue that affected the docking and undocking of Internet Explorer windows.

  • Addressed issue that affected the rendering of a graphics element in Internet Explorer.

  • Addressed issue that was caused by a pop-up window in Internet Explorer.

  • Addressed issue in which USBHUB.SYS randomly caused memory corruption that caused 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 that are 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.

Known issues in this update


Symptom Workaround

After installing KB4042895, package users may receive an error message that states that an application exception has occurred when some applications are closed. This can affect applications that use mshtml.dll to load web content. This problem occurs only when a process is already shutting down. It does not affect application functionality.

Microsoft is working on a resolution and will provide an update in an upcoming release.

Installing this update may cause applications based on the Microsoft JET Database Engine (Microsoft Access 2007 and older or non-Microsoft applications) to fail when creating or opening Microsoft Excel .xls files. The error message is, “Unexpected error from external database driver (1). (Microsoft JET Database Engine)".

Download and install the Microsoft Access Database Engine 2010 Redistributable, and then modify the DB connection strings in Microsoft Excel to use ACE as a provider. Example: Change Provider=Microsoft.Jet.OLEDB.4.0 to Provider=Microsoft.ACE.OLEDB.12.0.

Microsoft is working on a resolution and will provide an update in an upcoming release.

Some users who have the text size for icons set to a larger size (using Display Settings in Control Panel) may have issues launching Internet Explorer.

Reducing the text size for icons to a smaller value or using the Change the size of all items setting should alleviate this issue.

Microsoft is working on a resolution and will provide an update in an upcoming release.

After installing this KB, Internet Explorer 11 users who use SQL Server Reporting Services (SSRS) may not be able to scroll through a drop-down menu using the scroll bar.

This issue is resolved in KB4053581.

 

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.