check before: 2025-05-31
Product:
Windows
Platform:
Mac, Online, Windows Desktop, World tenant
Status:
Change type:
Admin impact
Links:
Details:
Microsoft has identified an issue where the May 2025 Windows security update (KB5058405) might fail to install on some Windows 11, versions 22H2 and 23H2 devices, resulting in a recovery error (0xc0000098) related to the ACPI.sys file. This issue primarily affects virtual environments, including Azure Virtual Machines, Azure Virtual Desktop, and on-premises VMs hosted on Citrix or Hyper-V. Home users of Windows using Home or Pro editions are unlikely to be impacted.
We recommend using Azure Virtual Machine repair commands as a workaround for Azure customers who have already applied the May 2025 Windows security update and are experiencing this issue. For more details on this issue, see KB5058405 might fail to install with recovery error 0xc0000098 in ACPI.sys.
To address this issue, the out-of-band (OOB) update KB5062170 has been released today, May 31, 2025. This non-security OOB update is available exclusively via the Microsoft Update Catalog. If you have not yet deployed the May 2025 Windows security update (KB5058405) and your environment includes devices running in a virtual desktop infrastructure on Windows 11, versions 22H2 and 23H2, we recommend you apply the OOB update instead. This OOB update includes all improvements and fixes in the May 2025 Windows non-security preview update (KB5058502), in addition to this issue's resolution.
Change Category:
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Scope:
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Release Phase:
Created:
2025-06-01
updated:
2025-06-01
Task Type
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Docu to Check
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
The May 2025 Windows security update (KB5058405) caused installation errors in virtual environments like Azure Virtual Machines due to ACPI.sys file issues, which Microsoft addressed with the out-of-band update KB5062170, available through the Microsoft Update Catalog.
Direct effects for Operations**
Installation Failure
Failure to install the May 2025 Windows security update (KB5058405) leading to recovery error 0xc0000098, causing downtime in virtual environments.
- roles: System Administrator, IT Support Specialist
- references: https://learn.microsoft.com/windows/release-health/status-windows-11-23h2#3563msgdesc, https://support.microsoft.com/help/5058405
Increased Downtime
Inability to access virtual machines due to installation errors, resulting in increased downtime for users relying on these systems.
- roles: End User, System Administrator
- references: https://learn.microsoft.com/troubleshoot/azure/virtual-machines/windows/repair-windows-vm-using-azure-virtual-machine-repair-commands, https://support.microsoft.com/topic/fb7ab9b6-c874-41cf-b962-c674482aa24d
User Experience Degradation
Users may experience degraded performance or unavailability of services due to unresolved installation issues in virtual environments.
- roles: End User, IT Support Specialist
- references: https://learn.microsoft.com/windows-hardware/drivers/kernel/acpi-driver, https://support.microsoft.com/topic/may-27-2025-kb5058502-os-22621-5413-and-22631-5413-preview-6291789c-1eea-4227-9740-a701af6de688
Increased Support Tickets
Higher volume of support tickets related to installation issues and recovery errors, straining IT support resources.
- roles: IT Support Specialist, Help Desk Technician
- references: https://learn.microsoft.com/troubleshoot/azure/virtual-machines/windows/repair-windows-vm-using-azure-virtual-machine-repair-commands, https://www.catalog.update.microsoft.com/Search.aspx?q=KB5062170
Potential Data Loss
Risk of data loss if recovery procedures are not properly followed after installation failure, impacting business continuity.
- roles: System Administrator, Data Analyst
- references: https://learn.microsoft.com/windows/release-health/status-windows-11-23h2#3563msgdesc, https://support.microsoft.com/help/5058405
Configutation Options**
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Opportunities**
Enhanced Virtual Machine Recovery Procedures
Implementing streamlined procedures for Azure VM recovery can significantly reduce downtime during update failures, especially for environments impacted by the ACPI.sys error. This ensures quicker recovery and less disruption to business operations.
- next-steps: Develop and document clear recovery protocols for Azure VMs, including the use of the Azure Virtual Machine repair commands. Conduct training sessions for IT staff on these procedures.
- roles: IT Administrators, System Engineers, Cloud Architects
- references: https://learn.microsoft.com/troubleshoot/azure/virtual-machines/windows/repair-windows-vm-using-azure-virtual-machine-repair-commands
Automated Monitoring and Alerting for Update Failures
Creating an automated monitoring system that alerts IT staff to update failures related to critical updates like KB5058405 can lead to proactive resolution of issues before they impact users.
- next-steps: Evaluate and implement monitoring tools that can track the status of Windows updates across all virtual machines. Set up alert systems to notify administrators of any failures.
- roles: IT Operations Managers, System Administrators, DevOps Engineers
- references: https://learn.microsoft.com/windows/release-health/status-windows-11-23h2#3563msgdesc
User Education on Update Procedures
Providing training and resources for end-users about the update process and common issues can empower them to report problems more effectively, leading to faster resolutions and improved user experience.
- next-steps: Create a user-friendly guide detailing the update process and common issues. Host informational sessions or webinars to educate users about these updates and how to respond if they encounter issues.
- roles: IT Support Staff, Training Coordinators, End Users
- references: https://support.microsoft.com/help/5058405
Potentional Risks**
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IT Security**
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explanation for non-techies**
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