KB4524570 Update for Windows 10 1909 and 1903

Windows 10 1903 and 1909 versions receive update KB4524570 on Patch Tuesday 12 November 2019 with multiple improvements and fixes.

Microsoft rolls out a series of security updates in the form of a Tuesday patch. One such cumulative update is KB4524570 for Windows 10, version 1909, Build 18363.476. This is a security update and it contains all the enhancements from Windows 10, version 1903. Secondly, this release does not have any additional problems that the team documents during the release. Though loaded with some security updates for both Edge and Internet Explorer, the package is not free form issues. Users might confront problems at the Out of Box Experience (OOBE) phase during a new Windows setup. Let us explore all the details of this patch and see what is in store for you.


KB4524570 for Windows 10 version 1909 Pic 1

KB4524570 for Windows 10 1909 Patch Tuesday Update

Here is the list of key modifications that KB4524570 for Windows 10 version 1909 includes –

  • This package provides security against the  Intel® Processor Machine Check Error vulnerability (CVE-2018-12207). The Guidance KB article addresses it via a registry setting. So, follow it accordingly and note that the entry is disabled by default.
  • KB4524570 focuses on a specific problem in the Keyboard Lockdown Subsystem. It failed to filter key input correctly.
  • Furthermore, the package fetches security updates to several components of the operating system. For example, it provides updates to Windows Linux, Windows Kernel, Microsoft Scripting Engine, Windows Cryptography, Microsoft JET Database Engine, Internet Explorer, Microsoft Edge, Windows Fundamentals, Windows App Platform and Frameworks, Windows Virtualization, and the Windows Datacenter Networking.
  • The team also carries forward protection against the Intel® Transactional Synchronization Extensions (Intel® TSX) Transaction Asynchronous Abort vulnerability (CVE-2019-11135). You can bring the settings into use as documented in the Windows Server and Windows Client articles. By default, these settings are enabled for Windows Server OS editions and Windows Client OS editions as well.

Known Issues


While setting up a new Windows device, users may encounter an issue at the Out of Box Experience (OOBE) phase. You may not be able to create a local user when using the Input Method Editor (aka IME). Furthermore, it might affect you adversely if you are using the IME for Korean, Chinese, and Japanese languages.

However, you should also keep a note that the problem does not affect while using a Microsoft Account during OOBE.


The giant software provides you a temporary resolution for this issue. The team asks you to set the keyboard language to English during user creation. Or you can use a Microsoft Account to end the OOBE procedure and mitigate the problem. The good thing is you can pretty effortlessly set the keyboard language back to your preferred one after user creation.

Microsoft is working on a resolution and the forthcoming release will provide you the same. Until then, you can try out this simple tweak.

How to Get KB4524570

The latest servicing stack update (in short SSU) plays a vital role in the operating system and thus the company asks you to install it beforehand. Installing it enhances the reliability of the update procedure which eventually helps in reducing the complications while installing the LCU.

However, you can grab the standalone package of this Tuesday patch from Microsoft Update Catalog and install it manually.

Another way is to get it through Windows Update. Simply, access the Settings app by using Win + I hotkeys. Navigate to the Update & security category on the UI. Here, click Check for updates button to download KB4524570. If the package asks for a reboot, restart Windows 10 PC to complete the installation.

Source – Release note

That’s all!!!

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Topics:  Windows update
About Sunita
Love to play with Windows 11 and 10. Suggestion - Going for Registry change or system files edit then remember to take a backup or create a restore point before Starting.