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Windows 10 1809 Windows 10 1809 Security update
Patch Tuesday

KB5034127

KB5034127: Cumulative update for Windows 10, version 1809, January 2024. IE mode hangs and multi-monitor touch input issues addressed

In short

Addresses problems that can make IE mode stop responding and touchscreens work improperly with multiple monitors. As of March 31, 2026, it is no longer available through Microsoft release channels.

Does it affect you? Applies to: Devices running Windows 10 Enterprise LTSC 2019, version 1809.

Build
17763.5329
Security
32 fixed · 2 critical
Review notes Additional details from the official release notes (1) Read note
  • What changes The IE mode issue occurs when an empty text box has focus and caret browsing is on.

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

Microsoft publishes separate notes for this KB for Windows Server.

What changes

Fixes 12 changes

IE mode

For: IE mode users

  • IE mode can stop responding when you press the left arrow key in an empty text box. This update addresses the issue when caret browsing is on.1
    The issue occurs when an empty text box has focus and the caret (cursor) is visible.

Touchscreens

  • This update addresses touchscreen problems that occur when you use more than one monitor.2

ActiveX scroll bar

For: IE mode users

  • This update addresses an issue that prevents the ActiveX scroll bar from working in IE mode.3

Disk partitions

For: Devices with BitLocker partitions

  • Adding space from a deleted partition to an existing BitLocker partition can make the system stop responding. This update addresses that problem.4

Smart card authentication

For: Devices using smart card authentication on remote systems

  • This update addresses an issue that can shut down a device after 60 seconds when a smart card is used to authenticate on a remote system.5

Windows LAPS

For: Devices using Windows LAPS

  • This update addresses an issue that can make the LAPS account stop working when its password is older than the maximum age allowed by device policy.6
    Affects the Windows Local Administrator Password Solution (Windows LAPS).

Kerberos Key Distribution Center (KDC)

For: Devices using Kerberos trust referrals

  • This update addresses an incorrect error returned during trust referrals.7
    The KDC can incorrectly return KDC_ERR_S_PRINCIPAL_UNKNOWN during trust referrals.

lsass.exe

  • This update addresses an issue that can make the device restart repeatedly.8
    The restart loop occurs when lsass.exe stops responding.

Key Distribution Service (KDS)

For: Devices that need LDAP referrals

  • This update addresses an issue that can delay the Key Distribution Service from starting when LDAP referrals are needed.9

Server Manager

  • The Server Manager pop-up text no longer includes the words “Azure Automanage.”10

Group Policy Folder Redirection

  • This update addresses a problem that can prevent admins from choosing a group account in the target domain and applying advanced folder redirection settings.11
    The issue occurs in multi-forest deployments when the target domain has a one-way trust with the admin user's domain. It affects ESAE, Hardened Forests, and PAM deployments.

BitLocker

For: IT administrators using MDM to manage BitLocker

  • This update addresses an issue that can prevent an MDM service from getting the right data for BitLocker data-only encryption.12
    The issue occurs when FixedDrivesEncryptionType or SystemDrivesEncryptionType is used in the BitLocker configuration service provider (CSP) node.

Improvement 1 change

Servicing stack

  • The component that installs Windows updates receives quality improvements to help devices receive and install Microsoft updates.13
    Includes the Windows 10 servicing stack update, build 17763.5084.

Technical details

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

Data sheet

Released
2024-01-09
Type
Cumulative update
VersionBuildChannel
1809 17763.5329 General availability

Security

32 vulnerabilities fixed
2 critical 30 important
VulnerabilitySeverityCVSS
CVE-2024-20674
Windows Kerberos Security Feature Bypass Vulnerability
 Critical 8.8
CVE-2024-20700
Windows Hyper-V Remote Code Execution Vulnerability
 Critical 7.5

The table lists the 2 exploited, publicly disclosed or critical vulnerabilities. See all 32 vulnerabilities →

Sources

Updated
Cited passages from Microsoft's official notes (13)
  1. 1. This update addresses an issue that causes IE mode to stop responding. This occurs if you press the left arrow key when an empty text box has the focus and caret (cursor) browsing is on. support.microsoft.com
  2. 2. This update addresses an issue that affects touchscreens. They do not work properly when you use more than one monitor. support.microsoft.com
  3. 3. This update addresses an issue that affects the ActiveX scroll bar. It does not work in IE mode. support.microsoft.com
  4. 4. This update addresses an issue that affects disk partitions. Your system might stop responding. This occurs if you add space from a deleted partition to an existing BitLocker partition. support.microsoft.com
  5. 5. This update addresses an issue that causes your device to shut down after 60 seconds. This occurs when you use a smart card to authenticate on a remote system. support.microsoft.com
  6. 6. This update addresses an issue that affects the Windows Local Administrator Password Solution (Windows LAPS). The LAPS account does not work. This occurs if the password is older than the age that the maximum age device policy allows. support.microsoft.com
  7. 7. This update addresses an issue that affects the Kerberos Key Distribution Center (KDC). It returns a KDC_ERR_S_PRINCIPAL_UNKNOWN error during trust referrals, which is wrong. support.microsoft.com
  8. 8. This update addresses an issue that causes lsass.exe to stop responding. Because of this, a restart loop occurs. support.microsoft.com
  9. 9. This update addresses an issue that affects the Key Distribution Service (KDS). It does not start in the time required if LDAP referrals are needed. support.microsoft.com
  10. 10. This update addresses an issue that affects the Server Manager pop-up text. It removes the words “Azure Automanage.” support.microsoft.com
  11. 11. This update addresses an issue that affects Group Policy Folder Redirection in a multi-forest deployment. The issue stops you from choosing a group account from the target domain. support.microsoft.com
  12. 12. This update addresses a known issue that affects BitLocker data-only encryption. A mobile device management (MDM) service, such as Microsoft Intune, might not get the right data. support.microsoft.com
  13. 13. 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, 13 quoted passages · compared with Microsoft's page on Nov 8, 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