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Windows 10 1809 Windows 10 1809 Out-of-band update
Out-of-band

KB5061978

KB5061978: Cumulative update for Windows 10, version 1809, May 2025. Hyper-V confidential VMs stop freezing or restarting unexpectedly

In short

Fixes an issue that caused confidential virtual machines on Hyper-V with Windows Server 2022 to stop responding or restart unexpectedly, affecting service availability.

Does it affect you? Applies to: Devices running Windows 10 Enterprise LTSC 2019, version 1809, on x86 or x64. The Hyper-V fix concerns confidential virtual machines running on Hyper-V with Windows Server 2022, primarily Azure confidential VMs.

Build
17763.7322
Restart
Required

Microsoft publishes separate notes for this KB for Windows Server.

What changes

Fix 1 change

Hyper-V Platform

For: IT administrators managing Hyper-V virtual machines

  • Confidential virtual machines on Hyper-V with Windows Server 2022 no longer stop responding or restart unexpectedly because of the direct send path issue. The problem primarily affected Azure confidential VMs.1
    Fixes an issue in the direct send path for a guest physical address (GPA).

Improvement 1 change

Servicing stack

  • The component that installs Windows updates receives quality improvements intended to improve the reliability of the update process.2
    Includes the Windows 10 servicing stack update KB5058525, build 17763.7313, combined with the latest cumulative update.

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2025-05-27
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5058392, KB5059091, KB5058922, KB5050008, KB5037425
Replaced by
KB5060531
VersionBuildChannel
1809 17763.7322 General availability

Security

No vulnerabilities are listed for this update.

Updated components

43 files changed since the previous update for the same versions.

Top changed componentsFiles
Kernel4
Graphics and display2
Networking2
Security and sign-in2

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. 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. support.microsoft.com
  2. 2. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 2 quoted passages · compared with Microsoft's page on Oct 20, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 4/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake