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Windows 11 23H2 Windows 11 23H2 Optional preview
Preview

KB5044380

KB5044380: Cumulative update for Windows 11, version 23H2, October 2024. Notification controls and Narrator features added; battery drain fixed

In short

Adds notification and Narrator features and fixes excess battery use in Modern Standby, plus several other issues. The OpenSSH service issue listed on the page is resolved by KB5052094.

Does it affect you? Applies to: This preview applies to Windows 11, version 23H2, and to version 22H2 Enterprise and Education editions. The page lists packages for x64 and Arm64 devices.

Build
22631.4391
Restart
Required
Review notes Additional details from the official release notes (1) Read note
  • In detail The update brings profiles up to date for certain mobile operators; the page does not say it adds new profiles.

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

What changes

Fixes 8 changes

Battery use

  • Devices use less battery power while in Modern Standby.1
    Fixes excessive battery use while the device is in Modern Standby.

Microsoft Teams

For: People joining Teams meetings from Outlook reminders

  • You can join Teams meetings by selecting an Outlook meeting reminder.2

Multi-Function Printer (MFP)

  • A USB-connected MFP no longer prints specific network command text when you do not want it to.3

vmswitch

For: Devices using the described virtual switch configuration

  • A virtual switch no longer triggers a stop error in the described virtual machine configuration.4
    The issue occurs with LBFO teaming and two virtual switches on a VM, when one virtual switch uses SR-IOV.

Collector sets

  • Collector sets close properly after an exception during startup or while active, and the stop command no longer stops responding for this reason.5

Windows Hello for Business

For: Windows Hello for Business users

  • PIN reset works from the “I forgot my PIN” link on the credentials screen.6

WebView2 apps

Verified in package

For: People using Xbox 360 or Bluetooth controllers with WebView2 apps

  • WebView2 apps detect input from Xbox 360 and Bluetooth controllers.7

Bluetooth

Verified in package
  • An app no longer stops responding because of a memory leak in a device.8

Improvements 5 changes

Product activation phone numbers

  • New product activation phone numbers are available for several regions.9

Windows 11, version 23H2

  • The version 23H2 build includes all the improvements in version 22H2.10

Country and Operator Settings Asset (COSA)

Verified in package
  • Mobile operator profiles are updated for certain operators.11

Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b)

Verified in package
  • The vulnerable driver list includes additional drivers at risk of being used in BYOVD attacks.12
    Adds drivers to DriverSiPolicy.p7b.

Servicing stack

For: Devices installing this update

  • The servicing stack receives quality improvements to help devices receive and install Microsoft updates.13
    The update includes servicing stack update KB5044620.

New features 5 changes

Notifications

Gradual rollout Verified in package
  • You can turn off suggestions to disable notifications from certain apps, either from a notification or in Settings.14
    The sender appears in the “Notification Suggestions” list only after you receive a notification.

Start menu

Gradual rollout
  • The “All apps” section is renamed “All.”15

Narrator

Gradual rollout 2 items
  • A new shortcut copies what Narrator last spoke to the clipboard.16
    Press the Narrator key + Ctrl + X.
  • Narrator now reads email messages aloud in the new Outlook.17

Copilot key settings

Verified in package

For: Devices with a Copilot key

  • You can set the Copilot key to open another app or Search. If the keyboard has no Copilot key, changing this setting has no effect.18
    On new devices the key opens the Copilot app; with a Microsoft Entra ID sign-in it opens the M365 app. A different app must be in a signed MSIX package. The setting is in Settings > Personalization > Text input.

Known issues

  1. Resolved Affects: Everyone Resolved by KB5052094

    Following the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections.

    Following the October 2024 security update, the OpenSSH service might fail to start on some devices, preventing SSH connections. The page says this affects a limited number of enterprise, IoT, and education devices and that Microsoft is investigating whether Home or Pro devices are affected. KB5052094 addresses the issue.19

    Resolution Fixed in KB5052094

    Install KB5052094 (or a later cumulative update) on affected devices. No manual workaround is required after updating.

Technical details

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

Data sheet

Released
2024-10-22
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5044285, KB5043145, KB5043076, KB5041587
+15 earlier KB5041585, KB5040527, KB5040442, KB5039302, KB5039212, KB5037853, KB5037771, KB5036980, KB5036893, KB5035942, KB5035853, KB5034848, KB5034765, KB5034204, KB5034123
Replaced by
KB5046633
VersionBuildChannel
23H2 22631.4391 General availability

Security

No vulnerabilities are listed for this update.

Updated components

4,316 files changed since the previous update for the same versions.

Top changed componentsFiles
Settings95
Graphics and display49
Hyper-V and virtualization40
Remote Desktop39
Bluetooth37
Networking34
Audio32
Security and sign-in28
File Explorer and shell26
Windows Update21
Printing18
Storage and file systems17

Verified in package: changed files confirm WebView2 apps, Bluetooth, Country and Operator Settings Asset (COSA), Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b), Notifications, Copilot key settings.

Sources

Updated
Cited passages from Microsoft's official notes (19)
  1. 1. [Battery use] Fixed: A device uses too much battery power while the device is in Modern Standby. support.microsoft.com
  2. 2. [Microsoft Teams] Fixed: The issue stops you from joining Teams meetings when you select an Outlook meeting reminder. support.microsoft.com
  3. 3. [Multi-Function Printer (MFP)] Fixed: When you use a USB cable to connect to it, it prints specific network command text when you do want it to. support.microsoft.com
  4. 4. [vmswitch] Fixed: A vmswitch triggers a stop error. This occurs when you use Load Balancing and Failover (LBFO) teaming with two virtual switches on a virtual machine (VM). support.microsoft.com
  5. 5. [Collector sets] Fixed: They do not close properly when an exception occurs during startup or while the set is active. support.microsoft.com
  6. 6. [Windows Hello for Business] Fixed: PIN reset does not work when you select the “I forgot my PIN’ link on the credentials screen. support.microsoft.com
  7. 7. [WebView2 apps] Fixed: They do not detect input from Xbox 360 and Bluetooth controllers. support.microsoft.com
  8. 8. [Bluetooth] Fixed: An app stops responding because of a memory leak in a device. support.microsoft.com
  9. 9. [Product activation phone numbers] Fixed: This adds new phone numbers for several regions. support.microsoft.com
  10. 10. This build includes all the improvements in Windows 11, version 22H2. support.microsoft.com
  11. 11. [Country and Operator Settings Asset (COSA)] Fixed: This update brings profiles up to date for certain mobile operators. support.microsoft.com
  12. 12. [Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b)] This update adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks. 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
  14. 14. [Notifications] New! You can now stop the suggestions to turn off notifications from certain apps. support.microsoft.com
  15. 15. [Start menu] New! “All apps” has the new name, “All.” support.microsoft.com
  16. 16. This update adds a new Narrator shortcut. Press the Narrator key + Ctrl + X to copy what Narrator last spoke to the clipboard. support.microsoft.com
  17. 17. It will now auto read the contents of an email message in the new Outlook. support.microsoft.com
  18. 18. You can make the key open a different app or open Search. support.microsoft.com
  19. 19. This issue is addressed in KB5052094. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 19 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