On April 16, 2025, Microsoft released an out-of-band update for Windows 10, designated as KB5059091 (OS Build 17763.7249). This update specifically targets Windows 10 Enterprise LTSC 2019, Windows 10 IoT Enterprise LTSC 2019, Windows 10 IoT Core LTSC, and Windows Server 2019. The primary focus of this update is to resolve issues related to container images and servicing stacks, enhancing the overall stability and compatibility of the operating system.
One notable improvement included in this update addresses a specific issue with the 2025.04 B container images, which were released on April 8, 2025. These images caused problems where Windows containers, particularly those running in Hyper-V isolation mode, could fail to start if there was a mismatch in the update levels between the containers and the utility virtual machine (UVM) hosting them. This compatibility issue arose due to discrepancies in system files, leading to startup failures. The KB5059091 update rectifies this by ensuring containers can properly access the required system files from the host, thereby improving reliability and compatibility among different versions of Windows.
Additionally, the update includes a servicing stack update (KB5055662, OS Build 17763.7125). Microsoft has streamlined the update process by combining the latest servicing stack update with the latest cumulative update. Servicing stack updates are crucial as they enhance the reliability of the update process, helping to prevent potential issues during the installation of updates.
For users and administrators, keeping systems up to date with these updates is essential for maintaining optimal performance, security, and compatibility within the Windows ecosystem. Users are encouraged to install this update to benefit from the improvements and enhancements it provides.
In conclusion, the release of KB5059091 is part of Microsoft's ongoing commitment to support and improve its operating systems, ensuring users experience greater reliability and functionality in their software environments
One notable improvement included in this update addresses a specific issue with the 2025.04 B container images, which were released on April 8, 2025. These images caused problems where Windows containers, particularly those running in Hyper-V isolation mode, could fail to start if there was a mismatch in the update levels between the containers and the utility virtual machine (UVM) hosting them. This compatibility issue arose due to discrepancies in system files, leading to startup failures. The KB5059091 update rectifies this by ensuring containers can properly access the required system files from the host, thereby improving reliability and compatibility among different versions of Windows.
Additionally, the update includes a servicing stack update (KB5055662, OS Build 17763.7125). Microsoft has streamlined the update process by combining the latest servicing stack update with the latest cumulative update. Servicing stack updates are crucial as they enhance the reliability of the update process, helping to prevent potential issues during the installation of updates.
For users and administrators, keeping systems up to date with these updates is essential for maintaining optimal performance, security, and compatibility within the Windows ecosystem. Users are encouraged to install this update to benefit from the improvements and enhancements it provides.
In conclusion, the release of KB5059091 is part of Microsoft's ongoing commitment to support and improve its operating systems, ensuring users experience greater reliability and functionality in their software environments
Windows 10 KB5059091 (OS Build 17763.7249) released
Microsoft has released Windows 10 KB5059091 for Win 10 Enterprise LTSC 2019, Win 10 IoT Enterprise LTSC 2019, Windows 10 IoT Core LTSC, and Windows Server 2019, focusing on resolving issues related to container images and servicing stacks.
Windows 10 KB5059091 (OS Build 17763.7249) released @ NT Compatible
