Microsoft Releases Cumulative Update KB4512941 for Windows 10 1903

Microsoft today released a new cumulative update for Windows 10 1903 aka “May 2019 Update” in the form of KB4512941. This is the first standalone update for 1903 since Patch Tuesday earlier this month. As is usually the case with most cumulative updates, there are no new features to report. There is, however, a healthy number of fixes that should improve overall system performance and the overall user experience. Here is a look at what’s included in this latest update.

KB4572941 for Windows 10 1903 May 2019 Update

After installing the update your build number will jump to 18362.329. Here is the list of what’s included:

  • Addresses an issue that displays a black screen when you use Remote Desktop to connect to a machine running Windows 10, version 1903.
  • Addresses an issue that may prevent the Windows Sandbox from starting with the error, “ERROR_FILE_NOT_FOUND (0x80070002).” This occurs on devices in which the operating system language is changed during the update process when installing Windows 10, version 1903.
  • Increases the number of supported interrupts per device to 512 on systems that have x2APIC enabled.
  • Addresses an issue that prevents some Trusted Platform Module (TPM) devices from being used for Next Generation Credentials.
  • Addresses an issue that causes a workstation to stop working when you sign in using an updated user principal name (UPN) (for example, changing to
  • Addresses an issue that prevents Windows Defender Advanced Threat Protection (ATP) from running automated forensic data collection when using registry-based proxy configuration.
  • Addresses an issue that prevents Windows Defender Advanced Threat Protection (ATP) from sending cyberspace events for paths beginning with \\tsclient.
  • Addresses a possible compatibility issue when Windows Defender Advanced Threat Protection (ATP) accesses case-sensitive Server Message Block (SMB) shares.
  • Addresses a rare issue that occurs when the mssecflt.sys driver takes too much space on the kernel stack. This results in the error, “STOP 0x7F: UNEXPECTED_KERNEL_MODE_TRAP”, and Parameter 1 is set to “EXCEPTION_DOUBLE_FAULT.”
  • Addresses an issue that leads to excessive memory utilization in Windows Defender Advanced Threat Protection (ATP).
  • Improves the detection accuracy of Microsoft Defender ATP Threat & Vulnerability Management.
  • Addresses an issue in which Windows Defender Application Control will not allow third-party binaries to be loaded from a Universal Windows Platform application. CodeIntegrity event error 3033 appears as, “Code Integrity determined that a process (<process name>) attempted to load <binary name> that did not meet the Store signing level requirements.”
  • Addresses an issue that causes devices to have truncated device names when Autopilot provisioning automatically assigns a name to them.
  • Addresses an issue in which the product description of Windows Server 2019 was incorrect when queried using slmgr /dlv.
  • Addresses an issue that causes the Windows Management Instrumentation (WMI) class Win32_PhysicalMemory to report that 32 GB memory chips have a missing Capacity value.
  • Addresses an issue that prevents you from copying and pasting compound documents (formerly OLE objects) between an application that hosts the RichEdit control and other applications.
  • Addresses an issue that prevents certain games from leveraging Spatial Audio capabilities.
  • Addresses an issue that fails to provide a cursor when you select a text input element using touch.
  • Addresses an issue that may cause the name of an unsupported application to appear as default text, such as “ms-resource:AppName/Text” in the Start menu after upgrading the operating system.
  • Addresses an issue that may prevent the personal identification number (PIN) prompt from appearing when authenticating in Internet Explorer.
  • Addresses an issue with downloading digital rights management (DRM) files from certain websites using Microsoft Edge and Internet Explorer.
  • Improves the user experience and app compatibility so that more Win32 apps will work with Windows Mixed Reality.
  • Addresses an issue with LdapPermissiveModify requests, which fail to make Active Directory (AD) group membership changes if the Lightweight Directory Access Protocol (LDAP) client uses the Security Identifier (SID) syntax. In this scenario, Active Directory returns a “SUCCESS” status even though the change did not occur.
  • Addresses an issue that may prevent devices from starting when they start up using Preboot Execution Environment (PXE) images from Windows Deployment Services (WDS) or System Center Configuration Manager (SCCM). The error is, “Status: 0xc0000001, Info: A required device isn’t connected or can’t be accessed.”
  • Addresses an issue that may prevent devices from starting up or cause them to continue restarting if they are connected to a domain that is configured to use MIT Kerberos realms. Domain controllers and domain members are both affected.
  • Addresses an issue that may cause the following to stop responding:
    • Applications that were made using Visual Basic 6 (VB6).
    • Macros that use Visual Basic for Applications (VBA).
    • Scripts or apps that use Visual Basic Scripting Edition (VBScript).

You may also receive an “Invalid procedure call” error.

You should get today’s new update automatically via Windows Update in the next couple of day. But if you want to stay on top of things, head to Settings > Update & Security > Windows Update to check. Or, you can manually download it from Windows Update Catalog.

There are a few known issues so make sure to read Microsoft’s release notes for all fixes, issues, and workarounds.

If you have issues that aren’t resolved with the documented workarounds, keep in mind that you can roll them back. For more on that, read our article on how to uninstall Windows 10 cumulative updates.

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