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Windows 11 24H2 Windows 11 24H2 Out-of-band update
Out-of-band

KB5041865

KB5041865: Cumulative update for Windows 11, version 24H2, August 2024. Widgets change, Android sharing arrives, and Explorer issues are fixed

In short

Adds Android sharing and improves Narrator, battery life, and File Explorer. Some Widgets Board widgets are removed or temporarily affected, and Roblox players on Arm devices need a workaround.

Does it affect you? Applies to: This preview is for Windows 11, version 24H2, targeting Copilot+ PCs and devices previously using Windows Insider 24H2 builds. The package is available for x64 and Arm64 devices.

Build
26100.1591
Restart
Required

What changes

Fixes 11 changes

File Explorer

Gradual rollout 5 items
  • When you open File Explorer, a screen reader no longer incorrectly announces that a pane has focus, or leaves focus unset.1
    The issue occurs when you press Windows logo key + E.
  • Pressing Ctrl + F starts search more reliably.2
    The search sometimes does not start when you press Ctrl + F.
  • Keyboard focus is less likely to get lost when you press Shift + Tab.3
  • Screen readers announce items as you open or browse them in the breadcrumb of an Open or Save dialog.4
  • Screen readers announce items as you open or browse them in the column header.5

Battery life

Gradual rollout
  • Some GPUs can enter a low-power state, helping prevent excess power use that reduces battery life.6
    Addresses GPUs that cannot enter the low power state.

Screen auto rotation

Gradual rollout

For: Some tablets and slate devices

  • Some tablet and slate screens rotate when the device position changes.7
    Addresses the auto rotation manager not connecting to the sensor that detects screen position.

FrameShutdownDelay

For: Devices using this registry setting

  • The browser no longer ignores the FrameShutdownDelay setting.8
    The setting is in HKLM\SOFTWARE\Microsoft\Internet Explorer\Main.

Domain Name System (DNS)

  • A deadlock during DNS client startup on a domain controller is addressed.9
    The deadlock occurs in the domain controller when it starts up in the DNS client.

Unified Write Filter (UWF) and Microsoft System Center Configuration Manager (SCCM)

  • An SCCM task to re-enable UWF no longer fails because of a UWF deadlock, which could stop the device from restarting as expected.10
    Addresses a deadlock in Unified Write Filter (UWF) that prevents an SCCM task from re-enabling UWF.

vmswitches

  • Virtual switches can be enumerated with the Get-VMSwitch command.11
    Fixes failure to enumerate vmswitches using Get-VMSwitch.

Improvements 5 changes

Widgets Board

Gradual rollout 3 items
  • Widgets Board gets security and API changes for widgets and feeds in EEA regions.12
    The update lays the foundation for new widgets and other features in development.
  • Microsoft Start Experiences powers the Microsoft Start widget and feed experiences.13
  • Other existing widgets are modified, which temporarily affects their functionality.14

Narrator

Gradual rollout

For: Narrator users

  • Narrator scan mode responds quicker, which helps when reading large documents in Microsoft Edge.15
    Turn on Narrator with Windows logo key + Ctrl + Enter, then turn on scan mode with Caps lock + Spacebar during a Narrator session.

Servicing stack

  • The component that installs Windows updates receives quality improvements.16
    Servicing stack update KB5042114 is combined with the cumulative update in this package.

New features 2 changes

Windows Share

Gradual rollout
  • You can share content to an Android device from the Windows Share window after pairing it with your PC.17
    Pair the Android device using Link to Windows and use Phone Link on the PC.

OpenSSH

  • A confirmation prompt appears when you turn on OpenSSH using Server Manager.18

Removal 1 change

Widgets Board

Gradual rollout

For: Users in EEA regions

  • Some existing widgets are removed.19

Known issues

  1. Open Affects: Everyone

    We’re aware of an issue where players on Arm devices are unable to download and play Roblox via the Microsoft Store on Windows.

    Players on Arm devices cannot download or play Roblox through the Microsoft Store on Windows.20

    How to apply the workaround Workaround

    Download Roblox directly from Roblox.com.20

Technical details

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

Data sheet

Released
2024-08-27
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5041571, KB5040529, KB5040435, KB5039304, KB5039239
Replaced by
KB5043080
VersionBuildChannel
24H2 26100.1591 General availability

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (20)
  1. 1. When you press Windows logo key + E, a screen reader might say a pane has focus, or the focus might not be set at all. support.microsoft.com
  2. 2. When you press Ctrl + F, sometimes the search does not start. support.microsoft.com
  3. 3. Keyboard focus sometimes might get lost when you press Shift + Tab. support.microsoft.com
  4. 4. Screen readers do not announce when you open or browse items that are in a breadcrumb of the Open or Save dialog. support.microsoft.com
  5. 5. Screen readers do not announce when you open or browse items in the column header. support.microsoft.com
  6. 6. Some GPUs cannot enter the low power state. This leads to high power usage that reduces battery life. support.microsoft.com
  7. 7. The auto rotation manager might not connect to the sensor that detects the position of a screen. support.microsoft.com
  8. 8. The browser ignores its value in the “HKLM\SOFTWARE\Microsoft\Internet Explorer\Main” registry key. support.microsoft.com
  9. 9. A deadlock occurs in the domain controller (DC) when it starts up in the DNS client. support.microsoft.com
  10. 10. An SCCM task to re-enable UWF fails because of a deadlock in UWF. This stops the device from restarting when you expect it. support.microsoft.com
  11. 11. They fail to enumerate using Get-VMSwitch command. support.microsoft.com
  12. 12. We are rolling out an update to the Widgets Board to improve security and the APIs for creating widgets and feeds for users in EEA regions. support.microsoft.com
  13. 13. the Microsoft Start Experiences app will power the Microsoft Start widget and feed experiences. support.microsoft.com
  14. 14. others will be modified, temporarily affecting their functionality. support.microsoft.com
  15. 15. This update makes scan mode respond quicker. This is especially helpful when you use Microsoft Edge and read large documents. support.microsoft.com
  16. 16. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
  17. 17. You can now share content to your Android device from the Windows Share window. support.microsoft.com
  18. 18. This update adds a prompt that asks you to confirm when you turn on OpenSSH using the Server Manager UI. support.microsoft.com
  19. 19. some existing widgets will be removed support.microsoft.com
  20. 20. Players on Arm devices can play Roblox by downloading the title directly from www.Roblox.com. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 20 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