What you need to know

  • October's "Patch Tuesday" updates are now available for Windows 10.
  • The updates bring security and bug fixes to various supported versions of Windows 10.
  • You can grab this month's updates via Windows 10 now.

Microsoft has started rolling out its latest "Patch Tuesday" updates for Windows 10 today. The updates, which are deployed on the second Tuesday of each month, bring security updates, bug fixes, and other improvements. This month, Microsoft has brough security updates for Internet Explorer and Microsoft Edge, along with some other tweaks for verifying user names and passwords.

If you're running the Windows 10 May 2019 Update, you'll see KB4517389, which bumps the build number to 18362.418. Here's a look at the release notes:

  • 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.

If you're still on the October 2018 update, you'll be bumped to build 17763.806 with KB4519338. Here's a look at what's new:

  • Addresses an issue in the Keyboard Lockdown Subsystem that may not filter key input correctly.
  • 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 Scripting Engine, Microsoft Edge, Windows App Platform and Frameworks, Windows Cryptography, Windows Authentication, Windows Kernel, and Windows Server.

Similar updates are also available for Windows 10 versions 1803, 1709, 1703, 1607, 1507, and Windows 10 Mobile. You can find the release notes for each at Microsoft's support site. In any case, you can secure today's updates now by checking Windows Update.

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