It’s Patch Tuesday again and Microsoft is rolling out new cumulative updates for all supported versions of Windows 10. Here is a look at what’s included for Windows 10 1809.

Microsoft today is rolling out a new round of cumulative updates for this month’s Patch Tuesday. There are new updates for all supported versions of Windows 10 and Server. The new update for Windows 10 1809 aka “October 2018 Update” is available in the form of KB4494441. Of course, with most cumulative updates, there are no new features to report. But it does include a number of fixes and improvements for the OS.

Windows 10 1809 May Patch_Tuesday

Windows 10 KB4494441 for Windows 10 1809 October 2018 Update

This latest update will bump your build to 17763.503 and includes the following list of fixes and improvements:

  • Enables “Retpoline” by default if Spectre Variant 2 (CVE-2017-5715) is enabled. Make sure previous OS protections against the Spectre Variant 2 vulnerability are enabled using the registry settings described in the Windows Client and Windows Server articles. (These registry settings are enabled by default for Windows Client OS editions, but disabled by default for Windows Server OS editions). For more information about “Retpoline”, see Mitigating Spectre variant 2 with Retpoline on Windows.
  • Provides protections against a new subclass of speculative execution side-channel vulnerabilities, known as Microarchitectural Data Sampling, for 64-Bit (x64) versions of Windows (CVE-2018-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130). 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).
  • Adds “uk.gov” into the HTTP Strict Transport Security Top Level Domains (HSTS TLD) for Internet Explorer and Microsoft Edge.
  • Addresses an issue that may cause “Error 1309” while installing or uninstalling certain types of .msi and .msp files on a virtual drive.
  • Addresses an issue that prevents the Microsoft Visual Studio Simulator from starting.
  • Addresses an issue that may cause zone transfers between primary and secondary DNS servers over the Transmission Control Protocol (TCP) to fail.
  • Addresses an issue that causes Simple Network Management Protocol (SNMP) Management Information Base registration to fail when the Windows Management Instrumentation (WMI) provider uses the Windows tool SMI2SMIR.exe.
  • Addresses an issue that may cause the text, layout, or cell size to become narrower or wider than expected in Microsoft Excel when using the MS UI Gothic or MS PGothic fonts.
  • Security updates to Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Graphics, Windows Storage and Filesystems, Windows Cryptography, the Microsoft JET Database Engine, Windows Kernel, Windows Virtualization, and Windows Server.

All other currently supported versions of Windows 10 are getting cumulative updates today, too. If you have automatic updates installed, you should receive them automatically in the next couple of days. Or, to stay on top of things, head to Settings > Update & Security > Windows Update to check.

Note that there are a few known issues with these updates depending on the version of the version you’re running. Make sure to read Microsoft’s full release notes for possible issues and workarounds.

If you have issues that aren’t resolved with the documented workarounds. Or, the update breaks an app or service, remember you can roll them back. For more on that, read our article on how to uninstall Windows 10 cumulative updates.



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