Cumulative Update KB4520004 Windows 10 v1709 Build 16299.1451 - Oct. 8 Win Update

    Cumulative Update KB4520004 Windows 10 v1709 Build 16299.1451 - Oct. 8

    Cumulative Update KB4520004 Windows 10 v1709 Build 16299.1451 - Oct. 8

    Category: Win Update
    Posted: 08 Oct 2019

    October 8, 2019 - KB4520004 (OS Build 16299.1451)

    Applies to: Windows 10 version 1709

    Reminder March 12 and April 9 were the last two Delta updates for Windows 10, version 1709. Security and quality updates will continue to be available via the express and full cumulative update packages. For more information on this change please visit our blog.

    Reminder Windows 10, version 1709, reached end of service on April 9, 2019 for devices running Windows 10 Home, Pro, Pro for Workstation, and IoT Core editions. These devices will no longer receive monthly security and quality updates that contain protection from the latest security threats. To continue receiving security and quality updates, Microsoft recommends updating to the latest version of Windows 10.

    IMPORTANT Windows 10 Enterprise, Education, and IoT Enterprise editions will continue to receive servicing for 12 months at no cost per the lifecycle announcement on October 2018.

    ePub support ending in Microsoft Edge
    Microsoft Edge will end support for e-books that use the .epub file extension over the next several months. For more information, see Download an ePub app to keep reading e-books.

    For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article.


    • Updates to improve security when using Internet Explorer and Microsoft Edge.
    • Updates for verifying user names and passwords.

    • Updates for storing and managing files.

    Improvements and fixes

    This security update includes quality improvements. Key changes include:

    • Addresses an issue in the Keyboard Lockdown Subsystem that may not filter key input correctly.
    • Addresses an issue with the Bluetooth hardening updates, released August 13, 2019, that may cause a "0x133 DPC_WATCHDOG_VIOLATION" error.
    • Addresses an issue in security bulletin CVE-2019-1318 that may cause client or server computers that don’t support Extended Master Secret (EMS) RFC 7627 to have increased connection latency and CPU utilization. This issue occurs while performing full Transport Layer Security (TLS) handshakes from devices that don’t support EMS, especially on servers. EMS support has been available for all the supported versions of Windows since calendar year 2015 and is being incrementally enforced by the installation of the October 8, 2019 and later monthly updates.
    • Addresses an issue with applications and printer drivers that utilize the Windows JavaScript engine (jscript.dll) for processing print jobs.
    • Security updates to Windows Shell, Microsoft Edge, Internet Explorer, Windows App Platform and Frameworks, Windows Cryptography, Windows Authentication, Windows Datacenter Networking, Windows Storage and Filesystems, Microsoft JET Database Engine, Windows Kernel, Microsoft Scripting Engine, and Windows 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.

    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.

    How to get this update

    Before installing this update

    Microsoft strongly recommends 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 (KB4521860) 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 website.
    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 4520004.


    Direct download links for KB4520004 MSU file from Microsoft Update Catalog:

    Download KB4520004 MSU for Windows 10 v1709 32-bit (x86) - 634.6 MB

    Download KB4520004 MSU for Windows 10 v1709 64-bit (x64) - 1039.2 MB

    Download KB4520004 MSU for Windows 10 v1709 ARM64 - 1094.1 MB

    Find Windows 10 Version Number

    Find Windows 10 Build Number

    Known issues and notifications in Windows 10 version 1709 - Windows Release Information | Microsoft Docs

    Resolved issues in Windows 10 version 1709 - Windows Release Information | Microsoft Docs

    Brink's Avatar Posted By: Brink
    08 Oct 2019


  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd
All times are GMT -5. The time now is 01:50.
Find Us

Windows 10 Forums