August 13, 2019—KB4512497 (OS Build 10240.18305)

Applies to: Windows 10

Highlights


  • Improves compatibility with the Window-Eyes screen reader application.
  • Updates to improve security when using Internet Explorer, Microsoft Edge, Bluetooth, networking technologies, and input devices such as a mouse, keyboard, or stylus.

Improvements and fixes


This security update includes quality improvements. Key changes include:

  • Updates time zone information for Brazil.
  • Updates time zone information for Morocco.
  • Addresses an issue with opening or using the Window-Eyes screen reader application that may result in an error and prevent some features from functioning as expected.
  • Addresses an issue that prevents users from using the Input Method Editor (IME) if any application started using the runas command.
  • Security updates to Windows Storage and Filesystems, Windows Wireless Networking, Windows App Platform and Frameworks, Microsoft Scripting Engine, Internet Explorer, Windows Input and Composition, Windows Cryptography, Windows Virtualization, Windows Datacenter Networking, the Microsoft JET Database Engine, Windows Server, Windows MSXML, and Microsoft Edge.

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.

Known issues in this update


Symptom Workaround
Certain operations, such as rename, that you perform on files or folders that are on a Cluster Shared Volume (CSV) may fail with the error, “STATUS_BAD_IMPERSONATION_LEVEL (0xC00000A5)”. This occurs when you perform the operation on a CSV owner node from a process that doesn’t have administrator privilege.

Do one of the following:

  • Perform the operation from a process that has administrator privilege.
  • Perform the operation from a node that doesn’t have CSV ownership.
Microsoft is working on a resolution and will provide an update in an upcoming release.
After installing this update, applications that were made using Visual Basic 6 (VB6), macros using Visual Basic for Applications (VBA), and scripts or apps using Visual Basic Scripting Edition (VBScript) may stop responding and you may receive an "invalid procedure call error."

This issue is resolved in KB4517276, which is an optional update. It is available on the following release channels:

  • Microsoft Update Catalog.
  • Windows Update.
  • Microsoft Update.
  • Windows Server Update Services (WSUS).

As with any optional update, you will need to Check for updates to receive and install KB4517276. For instructions, see Update Windows 10.

Note Windows Update for Business customers should apply the update using the Microsoft Update Catalog or Windows Server Update Services (WSUS).

How to get this update


Before installing this update

Microsoft strongly recommends that you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For more information, see Servicing stack updates.

If you are using Windows Update, the latest SSU (KB4509090) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel Available Next Step
Windows Update and Microsoft Update Yes None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog Yes To get the standalone package for this update, go to the Microsoft Update Catalog.
Windows Server Update Services (WSUS) Yes

This update will automatically synchronize with WSUS if you configure Products and Classifications as follows:

Product: Windows 10

Classification: Security Updates

 

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4512497.