Windows 11 KB5026372 & KB5026368 Now Available

May 2023 Security updates are now available for both Windows 11 versions 22h2 and 21h2 under the name KB5026372 & KB5026368 respectively. Since both these updates are security ones, you should upgrade your device to the latest OS Build version. In this post, we have included the recent changelog, the known issues with each update, and how to download and install them on your Windows PC. 

Without any further ado, let’s discuss what’s new on Windows 11 KB5026372. If you are looking for the latest update on your Windows 11 version 21h2, skip to this section directly. 

Windows 11 Cumulative updates

Windows 11 KB5026372 Changelog

Microsoft has brought the following changes to Windows 11 version 22h2 with May 2023 Security update –

  • Upgrade the existing OS Build number to 22621.1702.
  • Enhances the overall security of all Windows components and Microsoft Services.
  • With this update, users may now prioritize even non-security updates on their devices. This feature was previously provided on Windows 11 version 21h2 under KB5025298. 

To activate this feature, all you require is to visit Settings > Windows Update and enable the toggle switch next to “Get the latest updates as soon as they’re available“. If you are on a managed device, this toggle switch is disabled by default. To know more about this, visit this webpage.  

Prioritize non-security updates - Windows 11 KB5026372

  • Fixes the Kernel-mode Hardware-enforced Stack Protection security feature on your Windows 11 version 22h2. It was because of this feature only that users get into a Blue Screen Error on their devices. With this update, more and more compatible drivers will be added to the database of drivers. 
  • Previously, when the system processes multiple local account operations at the same time, this resulted in an error code 0xc0000005. This mostly occurs on account of the Local Security Authority Subsystem not working on Windows PC. Microsoft has fixed this race condition on Windows Local Administrator Password Solution (LAPS) as well.

Fix Windows 11 KB5026372 Failed to install

If you are unable to upgrade to OS Build 22621.1702 on your Windows 11 version 22h2 PC, you may download the relevant standalone package from Microsoft’s update catalog. Make sure to download the update matching your system architecture. The downloaded file is in .msu file format which requires a double-tap on it to begin the installation process. We have also provided the direct download links to KB5026372 –

Direct Download Links to KB5026372: 

Known Issues on KB5026372:

  • As per Microsoft, upgrading to OS Build 22621.1702 might cause some applications to face intermittent issues. This happens mostly when you use speech recognition, expressive input, and handwriting while using Chinese or Japanese languages.
  • After upgrading to this update, a few apps might fail to recognize any input from speech or other input types. This happens mostly when you are using offline speech recognition.

Sol: If you are struggling with either of the above issues on Windows 11 version 22h2, you should first close the buggy application. Open Task Manager next and search for ctfrmon.exe under the Processes tab. When found, right-click on this process and choose the End Task option. 

Wait for some time and you will find the ctfrmon.exe process restarting soon afterward. You will find the faulty application working again. 

Windows 11 KB5026368 Changelog

Microsoft has brought the following changes to Windows 11 version 21h2 with May 2023 Security update –

  • Upgrade the existing OS Build number to 22000.1936.
  • Improves the security of all Windows Components and Microsoft Services. 
  • Processing multiple local account operations at the same time triggers an access violation error code 0xc0000005 on Windows 11 version 21h2. After you upgrade to Build version 22000.1936 on Windows 11, this race condition fixes automatically. The local security authority subsystem service (LSASS) should work effectively after upgrading to this OS version. 

Known Issues on KB5026368:

  • According to Microsoft, if you are using some third-party customizing apps, they might not start after you upgrade to this OS Build. Third-party applications are known to interact with system files (Explorer in this case) and make them corrupt. The company has even named some apps which might not work after the update process finishes. They are ExplorerPatcher and StartAllBack.

Sol: If you are using either of the above applications, your device might get stuck into a reboot loop. If that’s the case, you must boot your device into Safe mode, and uninstall the buggy software from your system. 

Direct Download Links to KB5026368: 

If you have restricted your device from receiving security updates normally, you may visit Microsoft’s update catalog, and download the latest update based on your system architecture. The downloaded file is in .msu file format which requires a double-tap on it to begin the installation process.