Windows 10 Cumulative Updates, April 14, 2020

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Today is Patch Tuesday, so Microsoft has released a set of cumulative updates for supported Windows 10 versions. Here are the patches with their change logs.

Windows 10, version 1909 and 1903, KB4549951 (OS Builds 18362.778 and 18363.778)

  • Addresses an issue that prevents certain apps from installing if they are published using a Group Policy Object.
  • Addresses an issue that prevents a wired network interface from obtaining a new Dynamic Host Configuration Protocol (DHCP) IP address on new subnets and virtual LANs (VLAN) after wired 802.1x re-authentication. The issue occurs if you use VLANs that are based on accounts and a VLAN change occurs after a user signs in.
  • Security updates to the Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Cloud Infrastructure, Windows Virtualization, Microsoft Graphics Component, Windows Kernel, Windows Media, Windows Shell, Windows Management, Windows Fundamentals, Windows Virtualization, Windows Storage and Filesystems, Windows Update Stack, and the Microsoft JET Database Engine .

Windows 10, version 1809, KB4549949 (OS Build 17763.1158)

  • Addresses an issue that prevents certain apps from installing if they are published using a Group Policy Object.
  • Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Shell, Windows Management, Windows Cloud Infrastructure, Windows Fundamentals, Windows Virtualization, Windows Core Networking, Windows Storage and Filesystems, Windows Update Stack, and the Microsoft JET Database Engine.

Windows 10, version 1803, KB4550922 (OS Build 17134.1425)

Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Shell, Windows Management, Windows Cloud Infrastructure, Windows Fundamentals, Windows Core Networking, Windows Storage and Filesystems, Windows Update Stack, and the Microsoft JET Database Engine.

Windows 10, version 1709, KB4550927 (OS Build 16299.1806)

Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Management, Windows Cloud Infrastructure, Windows Fundamentals, Windows Core Networking, Windows Storage and Filesystems, Windows Update Stack, and the Microsoft JET Database Engine.

Windows 10, version 1703, KB4550939 (OS Build 15063.2346)

  • Addresses an issue that causes a memory leak in the LsaIso.exe process when the server is under a heavy authentication load and Credential Guard is enabled.
  • Addresses an issue with running klist.exe that causes lsass.exe to stop working and generates an access violation error (0xC0000005).
  • Addresses an issue with merging Windows Defender Application Control policies that sometimes generates a duplicate rule ID error and causes the Merge-CIPolicy PowerShell command to fail.
  • Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Management, Windows Fundamentals, Windows Core Networking, Windows Update Stack, and the Microsoft JET Database Engine.

Windows 10, version 1607, KB4550929 (OS Build 14393.3630)

Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Cloud Infrastructure, Windows Fundamentals, Windows Core Networking, Windows Update Stack, and the Microsoft JET Database Engine.

Windows 10, initial version

Security updates to the Microsoft Scripting Engine, Windows Kernel, Windows App Platform and Frameworks, Microsoft Graphics Component, Windows Media, Windows Fundamentals, Windows Core Networking, Windows Update Stack, and the Microsoft JET Database Engine.


Check out the Windows Update History web site to see prerequisites for the packages, and read about known issues (if any).

How to install the updates

To download these updates, open Settings - > Update & recovery and click on the Check for Updates button on the right.

Alternatively, you can get it from the Windows Update online catalog.

Helpful links

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Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

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