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Windows 10 22H2 Windows 10 22H2 Optional preview
Preview

KB5039299

KB5039299: Cumulative update for Windows 10, version 22H2, June 2024. Copilot becomes a movable app; taskbar and input issues addressed

In short

This optional preview pins Copilot as a resizable, movable app on eligible PCs and addresses several Windows 10 issues, including taskbar jump-list actions and Japanese text input.

Does it affect you? Applies to: Devices running Windows 10, version 22H2, on x86, x64, or Arm64. The Copilot change applies to new Windows 10 PCs and new Copilot+ PCs shipping to the European Economic Area and other markets where Copilot is available.

Build
19045.4598
Restart
Required

What changes

Fixes 8 changes

Taskbar jump lists

  • The update addresses cases where actions selected from an app’s taskbar jump list might fail.1
    A jump list appears when you right-click an app on the taskbar or Start menu.

Japanese Input Method Editor (IME)

For: Devices using the default Japanese IME

  • The update addresses cases where the Japanese input candidate window stops responding and unexpectedly returns to an earlier composition state.2
    Affects the default Japanese IME.

Context menus

For: Devices with apps that have context-menu tasks

  • When you right-click some apps, the update addresses cases where an “Open with” dialog appears instead of running the selected task.3
    The issue can also affect app icons on the taskbar and Start menu.

MSIX applications

For: Devices installing MSIX applications from HTTPS addresses

  • The update addresses cases where an app installed from an HTTPS address fails to open because its download is incomplete.4
    The incomplete download damages the package.

Direct Composition

  • The update addresses brief flashes of triangles or boxes on the screen in browsers and other apps.5
    Affects Direct Composition batched presentations.

Hibernate

For: Devices with BitLocker turned on

  • The update addresses cases where the system might not resume from hibernate after BitLocker is turned on.6

Windows Defender Application Control (WDAC)

  • The update addresses an issue involving unsigned WDAC policies being copied to a disk partition reserved for signed policies.7
    The affected partition is the Extensible Firmware Interface (EFI) disk partition.

Folder context menu

For: Devices with a third-party sync service

  • The update addresses cases where choosing a command to remove items from a folder context menu adds items instead.8
    The issue occurs when a third-party service implements a sync feature.

Improvements 3 changes

Mobile device management (MDM)

  • When a device is enrolled, more details are sent to help identify its model and manufacturer.9
    The MDM client sends the additional device details to the MDM service.

Country and Operator Settings Asset (COSA)

Verified in package
  • Mobile operator profiles are updated for certain operators.10

Servicing stack

  • The component that installs Windows updates receives quality improvements to help devices receive and install updates.11
    The update includes servicing stack update KB5039336, build 19045.4585.

New feature 1 change

Copilot

Gradual rollout

For: Eligible new Windows 10 PCs and Copilot+ PCs

  • On eligible new PCs, Copilot is pinned to the taskbar and works like an app that you can resize, move, and snap.12
    Applies to new Windows 10 PCs and new Copilot+ PCs shipping to the EEA and other markets where Copilot is available. For existing Windows 10 PCs, availability and delivery timing vary.

Known issues

  1. Open Affects: Everyone

    After installing this update, you might be unable to [change your user account profile picture](https://support.microsoft.com/en-us/windows/change-your-account-picture-3645cdc7-acab-49d2-76a9-4ce7e5e…

    After installing this update, changing a user account profile picture might fail with error 0x80070520. Microsoft says this issue has very limited or no impact for this Windows version.13

    How to apply the workaround Workaround

    Contact Windows support for help if the issue occurs.13

  2. Resolved Affects: Organizations and IT administrators Resolved by KB5040525

    After you install KB5034203 (dated 01/23/2024) or later updates, some Windows devices that use the [DHCP Option 235](https://learn.microsoft.com/tr…

    Some devices using DHCP Option 235 to discover Microsoft Connected Cache nodes might be unable to use those nodes and instead download updates and apps from the public internet. This issue is resolved by KB5040525.14

    Resolution Fixed in KB5040525

    Install KB5040525 (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
2024-06-25
Classification
Updates
Type
Cumulative update
Restart
Required
Replaces
KB5037849, KB5036979, KB5035941, KB5034843, KB5034203
Replaced by
KB5040525
VersionBuildChannel
22H2 19045.4598 General availability

Security

No vulnerabilities are listed for this update.

Updated components

1,802 files changed since the previous update for the same versions.

Top changed componentsFiles
Graphics and display47
Settings38
File Explorer and shell28
Audio27
Search24
Security and sign-in21
Windows Update21
Secure Boot18
Hyper-V and virtualization14
Storage and file systems14
Emoji and input12
Remote Desktop11

Verified in package: changed files confirm Country and Operator Settings Asset (COSA).

Sources

Updated
Cited passages from Microsoft's official notes (14)
  1. 1. This update addresses an issue that affects an app’s jump list on the taskbar. Completing actions from that list might fail. support.microsoft.com
  2. 2. This update addresses an issue that affects the default Japanese Input Method Editor (IME). The candidate window stops responding when you do not expect it. support.microsoft.com
  3. 3. This update addresses a known issue that might occur when you right-click some apps. Instead of running the task you choose from the context menu, an “Open with” dialog appears. support.microsoft.com
  4. 4. This update addresses an issue that affects MSIX applications. When you install them from an HTTPS URI, they fail to open. support.microsoft.com
  5. 5. This update addresses an issue that affects Direct Composition batched presentations. A brief flash of triangles or boxes show on the screen. support.microsoft.com
  6. 6. This update addresses an issue that might stop your system from resuming from hibernate. This occurs after you turn on BitLocker. support.microsoft.com
  7. 7. The issue copies unsigned WDAC policies to the Extensible Firmware Interface (EFI) disk partition. It is reserved for signed policies. support.microsoft.com
  8. 8. This update addresses an issue that affects a folder context menu. When you choose the command that removes items, the command adds items instead. support.microsoft.com
  9. 9. When you enroll a device, the MDM client sends more details about the device. The MDM service uses those details to identify the device model and the company that made it. support.microsoft.com
  10. 10. This update brings Country and Operator Settings Asset (COSA) profiles up to date for certain mobile operators. support.microsoft.com
  11. 11. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
  12. 12. The Copilot app is now pinned to the taskbar and behaves like an app. This gives you the benefits of a typical app experience. For example, you can resize, move, and snap the window. support.microsoft.com
  13. 13. After further investigation, we concluded this issue has very limited or no impact for this Windows version.If you encounter this issue on your device, please contact Windows support for help support.microsoft.com
  14. 14. This issue is addressed in KB5040525. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 14 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 5/5, completeness 4/5. 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