KB5061978: [Hyper-V Platform] Fixed

May 27, 2025—KB5061978 (OS Build 17763.7322) Out-of-band

Summary
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.