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

KB5039239

KB5039239: Cumulative update for Windows 11, version 24H2, June 2024. Bluetooth volume and Arm game issues addressed; Copilot pinned

In short

Addresses Bluetooth volume and Arm64 gaming problems, and pins Copilot to the taskbar as an app. Roblox downloads through the Microsoft Store remain unavailable on Arm devices, with a direct-download workaround.

Does it affect you? Applies to: Windows 11, version 24H2, targeting Copilot+ PCs and devices that were previously using Windows Insider 24H2 builds. The packages are available for x64 and Arm64.

Build
26100.863
Restart
Required

What changes

Improvements 3 changes

Windows Management Instrumentation Command line (WMIC)

For: new installations and devices upgraded to version 24H2

  • WMIC is disabled by default on new installations, but enabled by default when upgrading to version 24H2.1
    The default state of the WMIC Feature on Demand (FoD) is Disabled for new installations and Enabled for upgrades to Windows 11, version 24H2.

File Explorer

  • Files and folders from untrusted locations get a Mark of the Web tag. This changes the LastWriteTime timestamp and might affect scenarios that rely on file copy operations.2
    When MapUrlToZone classifies a file as Internet, File Explorer adds the Mark of the Web (MoTW) tag. The LastWriteTime timestamp is updated.

Servicing stack

  • The included servicing stack update improves the component that installs Windows updates.3
    Includes servicing stack update KB5039332, build 26100.840.

Fixes 2 changes

Bluetooth audio

For: devices using Bluetooth audio

  • The update addresses an issue where a Bluetooth device’s volume is set to maximum when you connect it.4

BattlEye anti-cheat

  • The update addresses a problem that might stop games with BattlEye anti-cheat from working on Arm64 devices.5

New feature 1 change

Copilot

For: Copilot+ PCs and devices previously using Windows Insider 24H2 builds

  • Copilot is pinned to the taskbar and behaves like an app, so you can resize, move, and snap its window.6

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.7

    How to apply the workaround Workaround

    Download Roblox directly from www.Roblox.com.7

Technical details

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

Data sheet

Released
2024-06-15
Classification
Security Updates
Type
Cumulative update
Restart
Required
Replaced by
KB5039304
VersionBuildChannel
24H2 26100.863 General availability

Security

No vulnerabilities are listed for this update.

Sources

Updated
Cited passages from Microsoft's official notes (7)
  1. 1. The default state of Feature on Demand (FoD) for new installations is “Disabled.” If you upgrade to Windows 11, version 24H2, the default state of FoD is “Enabled.” support.microsoft.com
  2. 2. Because of this change, the “LastWriteTime” time stamp is updated. This might affect some scenarios that rely on file copy operations. support.microsoft.com
  3. 3. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
  4. 4. This update addresses an issue that affects the audio for a Bluetooth device. When you connect it, the volume is set to maximum. support.microsoft.com
  5. 5. This update addresses an issue that might stop games that have BattlEye anti-cheat from working. This issue applies to Arm64 devices. support.microsoft.com
  6. 6. It is now pinned to the taskbar and will behave like an app. This gives you the benefits of a typical app experience. For example, you can do things like resize, move, and snap the window. support.microsoft.com
  7. 7. 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, 7 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 5/5, 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