May 27, 2025—KB5061978 (OS Build 17763.7322) Out-of-band
This article lists the fixed issues and quality improvements included in this out-of-band update.
This out-of-band update includes security and quality improvements that were a part of update KB5058392 (released May 13, 2025). The following is a summary of the fixed issues and quality improvements included in this out-of-band update. The bold text within the brackets indicates the item or area of the change we are documenting.
[Hyper-V Platform] Fixed: An issue in the direct send path for a guest physical address (GPA). This issue caused confidential virtual machines running on Hyper-V with Windows Server 2022 to intermittently stop responding or restart unexpectedly. As a result, service availability was affected, and manual intervention was required. This problem primarily impacted Azure confidential VMs.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For information about security vulnerabilities, please refer to the new Security Update Guide website and the May 2025 Security Updates.
Windows 10 servicing stack update (KB5058525) - 17763.7313
Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing updates.
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates.
May 27, 2025—KB5061978 (OS Build 17763.7322) Out-of-band - Microsoft Support
The Windows 10 KB5061978 out-of-band update enhances the quality of the Hyper-V Platform and resolves specific issues for Windows 10 Enterprise LTSC 2019, Windows 10 IoT Enterprise LTSC 2019, Windows 10 IoT Core LTSC, and Windows Server 2019. The update resolves a problem in the direct send path for a guest physical address, which was leading to confidential virtual machines becoming unresponsive or restarting unexpectedly. The update additionally incorporates enhancements to the servicing stack responsible for installing Windows updates. The recent update integrates the most current servicing stack update with the latest cumulative update, enhancing the reliability of the update process and addressing potential issues.
