What’s in the Windows 10 May Update? (KB5013942)

The May 2022 Update KB5013942 for Windows 10 is now available via Windows Update and brings several improvements and bug fixes. This May 2022 Patch Tuesday the focus was more on fixing bugs and vulnerabilities than user-centric improvements.

The Windows 10 May 2022 Update comes with 75 vulnerability fixes, eight of which are considered “Critical” due to the level of privilege in control of the system. According to the Microsoft report, 21 security issues that raise the level of privileges in accessing the operating system were resolved, in addition to 26 bugs that allow remote execution through code.

In addition to the security fixes mentioned above, Microsoft cited three “zero-day” bugs, including one related to the NTLM relay attack, where the hacker uses the “call” method and, through the LSARPC interface, performs the authentication using NTLM.

It is important to remember that this new update is automatic, that is, if you do not select the button to download it in Windows Update, the download and installation will be carried out automatically sooner or later.

If you look for updates on Windows Update today, the following patch will appear:

2022-05 Cumulative Update for Windows 10 Version 21H2 for X64-based Operating Systems (KB5013942)

Screenshot of Windows 10 update KB5013942 version 21H2.  Source: Victor Valeri
Screenshot of Windows 10 update KB5013942 version 21H2. Source: Victor Valeri

Note that Windows 10 Builds will be different depending on the OS versions (21H2, 21H1, 20H2 and 2004), but the changes in this update are the same in all cases. Below are the Windows 10 May 2022 Cumulative Updates and their versions with the respective Builds:

  • KB5013963 (Build 10240.19297) for version 1507.
  • KB5013952 (Build 14393.5125) for version 1607.
  • KB5013941 (Build 17763.2928) for version 1809.
  • KB5013945 (Build 18363.2274) for version 1909.
  • KB5013942 (build 19042.1706, 19043.1706, and 19044.1706) for v2004, 20H2, v21H1, 21H2.

How to download the update now

To get the performance improvements provided by the new Windows 10 update, follow the steps:

Step 01: Click on the Windows flag in the lower left corner to open the start menu.

Step 02: Select the gear symbol in the left corner under the column.

Step 03: Scroll down and select “update and security”.

Step 04: Select “check for updates”.

Step 05: Select “Download and Install” under updates.

Manually download and install update KB5013942

You can download update KB5013942 for Windows 10 (64-bit and 32-bit x86) manually here. After accessing the Microsoft Update catalog page, follow the steps below.

Step 01: When accessing the Microsoft Update catalog, there will be several updates available. You should find the patch compatible with update KB5013942 for the version of Windows 10 that is on your computer (21H2, 21H1, 20H2 and 2004).

Step 02: Select the “download” button next to the version of Windows 10 you want to download.

Step 03: Right click on the link and select “save as” to start the download.

Update Summary for Windows 10 Update KB5013942 (Build 19044.1706)

While Microsoft’s official note on Windows 10’s KB5013942 update shows that there have been improvements for solving security issues, there are some fixes that were not mentioned. An example of this is a bug that caused the Internet Explorer browser to crash when copying and pasting text.

In addition to the problem addressed above, a critical bug has been fixed that caused a black screen when trying to log in to the desktop or log out of it. There was also a bug fix where the “News and Interests” panel appeared on the screen without any command from the user.

Microsoft also fixed an issue that prevented the user from changing expired passwords during the login process. Basically the bug prevented the person from accessing the operating system.

Windows 10 version 21H2, as well as version 20H2 and 21H1, when updated with the KB5013942 patch, will also receive the following changes:

  • Fixed an issue that caused Kerberos authentication to fail. This happens when the client machine uses Remote Desktop Protocol (RDP) to connect to another machine.
  • Fixed an issue that prevented users from modifying expired passwords during login.
  • Fixed an issue causing Windows to stop working.
  • Fixed an issue where users cannot copy the security part of a Group Policy to a machine.
  • Fixed an issue preventing GPU load balancing in Remote Desktop.
  • Fixed issues with Microsoft RDP Client Control version 11 and above.
  • Fixed an issue where the OneDrive file could lose focus after renaming it and pressing the Enter key.
  • Fixed an issue that caused Netdom.exe procedures to fail.
  • Fixed an issue that prevents access to a network drive after connecting to the Server Message Block version 1 (SMBv1) share.
  • Fixed an issue that could cause the server to crash.
  • We fixed potential performance issues by reducing resource contention overhead in high input/output operations per second (IOPS) scenarios.

Known issues with the update

According to the update’s release note, some Windows 10 users will still face problems with the ‘Snip & Sketch’ tool working, preventing you from taking a screenshot using the “Win + Shift + S” keyboard command. .

Another problem that is occurring is the not opening of some applications. It is possible that a server-side patch will be available within 24 hours from Microsoft.

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