November 12, 2019—KB4524570 (OS Builds 18362.476 and 18363.476) - EXPIRED


None **NEW 8/5/21 EXPIRATION NOTICE****IMPORTANT **As of 8/5/2021, this KB is no longer available from Windows Update, the Microsoft Update Catalog, or other release channels. We recommend that you update your devices to the latest security quality update. **What's new for Windows 10, version 1909 and Windows 10, version 1903 release notes**Windows 10, versions 1903 and 1909 share a common core operating system and an identical set of system files. As a result, the new features in Windows 10, version 1909 were included in the recent monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are currently in a dormant state. These new features will remain dormant until they are turned on using an _enablement package_, which is a small, quick-to-install “master switch” that simply activates the Windows 10, version 1909 features.To reflect this change, the release notes for Windows 10, version 1903 and Windows 10, version 1909 will share an update history page. Each release page will contain a list of addressed issues for both 1903 and 1909 versions. Note that the 1909 version will always contain the fixes for 1903; however, 1903 will not contain the fixes for 1909. This page will provide you with the build numbers for both 1909 and 1903 versions so that it will be easier for support to assist you if you encounter issues.For more details about the enablement package and how to get the feature update, see the [Windows 10, version 1909 delivery options](<https://aka.ms/1909mechanics>) blog. 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.**Note **Follow [@WindowsUpdate](<https://twitter.com/windowsupdate>) to find out when new content is published to the release information dashboard. ## Highlights * Updates to improve security when using Internet Explorer and Microsoft Edge. ## Improvements and fixes ## __ Windows 10, version 1909 This security update includes quality improvements. Key changes include: * This build includes all the improvements from Windows 10, version 1903. * No additional issues were documented for this release. ## __ Windows 10, version 1903 **Note **This release also contains updates for Microsoft HoloLens (OS Build 18362.1039) released November 12, 2019. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build. This security update includes quality improvements. Key changes include: * Addresses an issue in the Keyboard Lockdown Subsystem that might not filter key input correctly. * Provides protections against the Intel® Processor Machine Check Error vulnerability (_[CVE-2018-12207](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2018-12207>)_). Use the registry setting as described in the Guidance KB article_. _(This registry setting is disabled by default.) * Provides protections against the Intel® Transactional Synchronization Extensions (Intel® TSX) Transaction Asynchronous Abort vulnerability ([CVE-2019-11135](<https://portal.msrc.microsoft.com/security-guidance/advisory/CVE-2019-11135>)). Use the registry settings as described in the Windows Client and Windows Server articles_. _(These registry settings are enabled by default for Windows Client OS editions and Windows Server OS editions.) * Security updates to Microsoft Scripting Engine, Internet Explorer, Windows App Platform and Frameworks, Microsoft Edge, Windows Fundamentals, Windows Cryptography, Windows Virtualization, Windows Linux, Windows Kernel, Windows Datacenter Networking, and the Microsoft JET Database Engine. 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](<https://portal.msrc.microsoft.com/security-guidance>). **Windows Update Improvements**Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions. Known issues in this update**Symptom**| **Workaround**| **Applies To** ---|---|--- When setting up a new Windows device during the Out of Box Experience (OOBE), you might be unable to create a local user when using Input Method Editor (IME). This issue might affect you if you are using the IME for Chinese, Japanese, or Korean languages.**Note** This issue does not affect using a Microsoft Account during OOBE.| This issue is resolved in KB4530684.| Windows 10, version 1903, Windows 10, version 1909 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](<https://docs.microsoft.com/windows/deployment/update/servicing-stack-updates#why-should-servicing-stack-updates-be-installed-and-kept-up-to-date>).If you are using Windows Update, the latest SSU (KB4524569) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the [Microsoft Update Catalog](<http://www.catalog.update.microsoft.com/home.aspx>).**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](<http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4524570>) 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, version 1903 and later**Classification**: Security Updates **File information**For a list of the files that are provided in this update, download the [file information for cumulative update 4524570](<https://download.microsoft.com/download/b/2/2/b22fcb82-8de0-4cbc-a355-f2d29b78db96/4524570.csv>).