October 2019 Patch Tuesday Updates Are Live for All Supported Windows 10 Versions

Oct 8, 2019
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Microsoft has started to release this month's Patch Tuesday Windows 10 cumulative updates to various versions of the operating system, including the latest May 2019 Update, version 1903.

The update brings patches to several security vulnerabilities. Today's Windows 10 cumulative updates also finally bring a fix for the printing issue, along with addressing the problem that was introduced by a previous security patch that resulted in increased CPU utilization.

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Key changes of KB4517389 (Build 18362.418) of Windows 10 1903 include:

  • 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, Internet Explorer, Microsoft Edge, Windows App Platform and Frameworks, Windows Cryptography, Windows Authentication, Windows Storage and Filesystems, Windows Kernel, Microsoft Scripting Engine, and Windows Server.

Windows 10 cumulative updates are also out for Windows 10 October 2018 Update, version 1809 (KB4519338 - Build 17763.806), April 2018 Update, version 1803 (KB4520008 - Build 17134.1069), Fall Creators Update, version 1709 (KB4520004 Build 16299.1451), Creators Update, version 1703 (KB4520010 - Build 15063.2108), Anniversary Update, version 1607 (KB4519998 - Build 14393.3274),  and the original Windows 10 (KB4520011 - Build 10240.18368).

You can install the latest Windows 10 cumulative updates via Settings > Update & Security > Windows Update.

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