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

KB5037425

KB5037425: Cumulative update for Windows 10, version 1809, March 2024. Stops LSASS memory leaks that could restart domain controllers

In short

Addresses an LSASS memory leak that could cause domain controllers to stop responding and restart unexpectedly while handling Kerberos requests.

Does it affect you? Applies to: Devices running Windows 10 Enterprise LTSC 2019, version 1809, including x86, x64 and Arm64 devices. The LSASS issue affects domain controllers processing Kerberos authentication requests.

Build
17763.5579
Restart
Required
Review notes Additional details from the official release notes (1) Read note
  • This page This update addresses a known issue in which LSASS might leak memory on domain controllers processing Kerberos authentication requests.

The official sources are linked at the end of the page.

Microsoft publishes separate notes for this KB for Windows Server.

What changes

Fix 1 change

Local Security Authority Subsystem Service (LSASS)

For: business

  • Addresses a memory leak that might cause domain controllers to stop responding and restart unexpectedly while processing Kerberos authentication requests.1
    The issue occurs after installing KB5035849 and affects on-premises and cloud-based Active Directory domain controllers.

Improvement 1 change

Servicing stack

For: Windows 10 version 1809 devices

  • Includes quality improvements to the component that installs Windows updates.2
    Windows 10 servicing stack update version 17763.5568.

Technical details

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

Data sheet

Released
2024-03-25
Classification
Updates
Type
Cumulative update
Restart
Required
Replaced by
KB5039217
VersionBuildChannel
1809 17763.5579 General availability

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. This substantial leak might cause excessive memory usage. Because of this, LSASS might stop responding, and the DCs will restart when you do not expect it. 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 3/5, 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