How to Troubleshoot Hyper-V VM Freeze or Restart Issues on Windows Server 2022

Microsoft has discovered occasional freeze or restart issues affecting certain Azure confidential virtual machines (VMs) running on Windows Server 2022. These VMs provide strong security with hardware-based protection, ensuring secure cloud operations without needing code modifications.

However, in preview or pre-production environments, these VMs may experience unexpected interruptions, impacting service availability and requiring manual intervention. To resolve this, Microsoft released an out-of-band (OOB) update (KB5061906) on May 23, 2025, which is available through the Microsoft Update Catalog. This update serves as an alternative solution for IT administrators who have not yet installed the May 2025 Windows security update (KB5058385).

Additionally, Microsoft has introduced a servicing stack update (KB5058531) to improve the reliability of Windows Server 2022 updates. This update ensures a stable installation process, preventing errors when deploying new patches. IT administrators have multiple options to install the updates, including Windows Update, Business channels, and the Microsoft Update Catalog.

As of May 26, 2025, no known issues have been reported with these updates, meaning organizations can confidently implement them to maintain VM stability. If administrators are unsure whether they need to apply the OOB update, Microsoft advises checking whether the issue has impacted their systems before proceeding.

[New Post]🛠How to Troubleshoot Hyper-V VM Freeze or Restart Issues on Windows Server 2022

⚠Hyper-V VM Freeze or Restart Issues

⚠Windows Server 2022 Freeze or Restart Unexpectedly

⚠How to Install OOB Update for Hyper-V

⚠Impacts Service Availability

⚠How to Troubleshoot Hyper-V VM Freeze or Restart Issues

Issue Overview: Microsoft has identified occasional freeze or restart issues in certain Hyper-V virtual machines (VMs) running on Windows Server 2022, primarily affecting Azure confidential VMs.

Affected Environments: The issue is not common in typical Hyper-V setups and is mostly seen in preview or pre-production environments.

Solution Provided: To address this, Microsoft released an out-of-band (OOB) update (KB5061906) on May 23, 2025. This update is available through the Microsoft Update Catalog.

Installation Guidance: IT administrators with affected servers should install KB5061906 if they haven't already deployed the May 2025 Windows security update (KB5058385).

Windows Servicing Stack Update: Another servicing stack update (KB5058531) enhances the stability of Windows updates, ensuring reliable installation processes.

How to Install: Various official Microsoft channels are available to install the update, including Windows Update, Business channels, and Microsoft Update Catalog.

No Known Issues: As of May 26, 2025, no problems have been reported with this update.

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