Microsoft has now released Windows 10 May update KB5013942 (Builds 19042.1706, 19043.1706, and 19044.1706) to all devices running Windows 10. The update KB5013942 brings Secure Boot and other improvements and many fixes.

Coming to details now, the Windows 10 update KB5013942 brings improvements for servicing the Secure Boot component of Windows. It also packs other improvements like reducing the overhead of resource contention in high input/output operations per second (IOPS) scenarios.

These are the fixes exclusive to Windows 10 update KB5013942.

This security update includes improvements that were a part of update KB5011831 (released April 25, 2022) and also addresses the following issues:

This update contains miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.

There are many fixes for Windows 10 issues including BSOD issues in the update KB5011831. Read the full changelog below.

This non-security update includes quality improvements. Key changes include:

  • New! Adds improvements for servicing the Secure Boot component of Windows.
  • Changes the timeout for Azure Active Directory (Azure AD) registration from 60 minutes to 90 minutes for hybrid Azure AD-joined Autopilot scenarios. This also addresses a race condition that causes an exception at timeout.
  • Addresses an issue that causes a remote desktop session to close or a reconnection to stop responding while waiting on the accessibility shortcut handler (sethc.exe).
  • Addresses an issue in which certain Point of Sale terminals experience occasional OS startup delays during restart of up to 40 minutes.
  • Addresses an issue that incorrectly returns Execution Policy settings from the registry.
  • Addresses an issue that causes Internet Explorer to stop working when you copy and paste text using an Input Method Editor (IME).
  • Addresses an issue that displays a black screen for some users when they sign in or sign out.
  • Addresses an issue that causes Kerberos authentication to fail, and the error is “0xc0030009 (RPC_NT_NULL_REF_POINTER)”. This occurs when a client machine attempts to use the Remote Desktop Protocol (RDP) to connect to another machine while Remote Credential Guard is enabled.
  • Addresses an issue that prevents you from changing a password that has expired when you sign in to a Windows device.
  • Addresses an issue that might cause Windows to stop working when you apply a Windows Defender Application Control (WDAC) policy that doesn’t require a restart.
  • Addresses an issue that might fail to copy the security portion of a Group Policy to a machine.
  • Addresses an issue that causes the Key Distribution Center (KDC) code to incorrectly return the error message “KDC_ERR_TGT_REVOKED” during domain controller shutdown.
  • Addresses an issue that might prevent graphics processing unit (GPU) load balancing over Remote Desktop from working as intended.
  • Addresses an issue that prevents the instantiation of the Microsoft RDP Client Control, version 11 and higher, inside a Microsoft Foundation Class (MFC) dialog.
  • Addresses an issue that might cause a Microsoft OneDrive file to lose focus after you rename it and press the Enter key.
  • Addresses an issue that causes the news and interest panel to appear when you haven’t clicked, tapped, or moused over it.
  • Addresses an issue that fails to pass the Shift KeyUp event to an application when you use the Korean IME.
  • Addresses an issue that might occur when you use Netdom.exe or the Active Directory Domains and Trusts snap-in to list or modify name suffixes routing. These procedures might fail. The error message is, “Insufficient system resources exist to complete the requested service.” This issue occurs after installing the January 2022 security update on the primary domain controller emulator (PDCe).
  • Addresses an issue that displays the wrong IME mode indicator when the Font Mitigation policy is enabled.
  • Addresses an issue that causes the primary domain controller (PDC) of the root domain to generate warning and error events in the System log. This issue occurs when the PDC incorrectly tries to scan outgoing-only trusts.
  • Addresses an issue that affects a Server Message Block (SMB) multichannel connection and might generate a 13A or C2 error.
  • Addresses an issue that occurs when you map a network drive to a Server Message Block version 1 (SMBv1) share. After restarting the OS, you cannot access that network drive.
  • Addresses an issue that causes virtual computer object (VCO) password settings failure on a distributed network name resource.
  • Addresses an issue that damages a pool when a Client-Side Caching (CSC) cleanup method fails to delete a resource that was created.
  • Addresses an issue that might cause the server to lock up because the nonpaged pool grows and uses up all memory. After a restart, the same issue occurs again when you try to repair the damage.

  • Reduces the overhead of resource contention in high input/output operations per second (IOPS) scenarios that have many threads contending on a single file.

If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

Download link:

You can download and manually install Windows 10 update KB5013942 by clicking here. If you need help in understanding how to install these updates manually on your PC, you can refer to our step by step noob-friendly tutorial.

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