KB5043131: Cumulative update for Windows 10, version 22H2, September 2024. Start menu appearance changes; IE mode and media playback issues addressed

This optional preview changes the Start menu and addresses problems with Edge in IE mode, surround-sound playback, and other Windows features. It also includes a servicing stack update.

Does it affect you? Applies to: Devices running Windows 10, version 22H2, on x86, x64, or Arm64.

Review notes Additional details from the official release notes (2) Read notes

What changes This update addresses the European Digital Markets Act SSO notice appearing too often when users authenticate with a certificate.
Known issues The AVD issue can cause a persistent black screen and difficulty signing out; Event Viewer may show an application fault involving svchost.exe_AppXSvc. An invalid AppxSvc state can also cause other symptoms, such as the Start menu closing unexpectedly.

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

What changes

Fixes 6 changes

IE mode

Microsoft Edge might stop responding less often when you use IE mode.¹

Media playback

Playback of some media might no longer stop when you use certain surround-sound technology.²

Microsoft Entra single sign-on (SSO)

For: devices using certificate authentication

The European Digital Markets Act notice about SSO prompts too often when you authenticate with a certificate.³

File Explorer and taskbar

Windows Server stops responding less often when you use apps such as File Explorer and the taskbar.⁴

Directory enumeration

Directory enumeration is less likely to fail when a directory contains symbolic links with long target names.⁵

Microsoft Defender for Endpoint

For: business

Work Folders files sync when Microsoft Defender for Endpoint is on.⁶

Improvements 3 changes

Country and Operator Settings Asset

Verified in package

For: devices using those mobile operators

COSA profiles are updated for certain mobile operators.⁷

Windows Update opt-in notifications

Verified in package

Windows Update opt-in notifications now appear when you sign in.⁸

Servicing stack

The component that installs Windows updates gets quality improvements.⁹
Includes servicing stack update KB5043130, build 19045.4950.

New feature 1 change

Start menu

Your profile picture might appear in a different position in the Start menu, which also gets a new background color in its left pane.¹⁰

Known issues

Resolved Affects: Everyone Resolved by KB5046613

After installing this update or later, you might observe that apps such as Quick Assist, Microsoft Teams, Windows Narrator, etc.

Quick Assist, Microsoft Teams, Windows Narrator, and other apps that use UIAccess might fail to start for non-admin users. KB5046613 addresses this issue.¹¹

Resolution Fixed in KB5046613

Install KB5046613 (or a later cumulative update) on affected devices. No manual workaround is required after updating.
Resolved Affects: Organizations and IT administrators Resolved by KB5045594

After installing this update, or subsequent updates, a small subset of Azure Virtual Desktop customers using multi-session hosts (AVD) may experience the following issues: - An extended 10-to-30-minu…

A small subset of AVD customers using multi-session hosts might encounter a 10-to-30-minute black-screen hang after sign-in and SSO failures in Office apps. Installing KB5045594 or later and applying one of the options in KB5048864 resolves the issue; both actions are required.¹²

Resolution Fixed in KB5045594

Install KB5045594 (or a later cumulative update) on affected devices. No manual workaround is required after updating.
Resolved Affects: Organizations and IT administrators Resolved by KB5045594

After installing this update, you might experience a black screen when you login to Azure Virtual Desktop (AVD).

A black screen at Azure Virtual Desktop sign-in, difficulty signing out, or an AppX Deployment Service error is resolved by installing KB5045594 or later and applying one of the options in KB5048864. Both actions are required.¹³

Resolution Fixed in KB5045594

Install KB5045594 (or a later cumulative update) on affected devices. No manual workaround is required after updating.
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…

Changing your user account profile picture might fail with error 0x80070520. Microsoft says the issue has very limited or no impact on this Windows version.¹⁴

How to apply the workaround Workaround

If you encounter the issue, contact Windows support for help.¹⁴

Technical details

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

Data sheet

Released: 2024-09-24
Classification: Updates
Type: Cumulative update
Restart: Required
Replaces: KB5041582, KB5040525, KB5039299, KB5037849

+4 earlier
KB5036979, KB5035941, KB5034843, KB5034203
Replaced by: KB5045594

Version	Build	Channel
22H2	19045.4957	General availability

Security

No vulnerabilities are listed for this update.

Downloads (Microsoft Update Catalog)

x64 22H2

662.1 MB

windows10.0-kb5043131-x64.msu Main update · KB5043131 SHA-1: e4ab5986…fa862b

Arm64 22H2

618.5 MB

windows10.0-kb5043131-arm64.msu Main update · KB5043131 SHA-1: 7a9b60a2…aa6e41

x86 22H2

376.7 MB

windows10.0-kb5043131-x86.msu Main update · KB5043131 SHA-1: c54ca01f…84df53

Updated components

2,008 files changed since the previous update for the same versions.

Top changed components	Files
Graphics and display	38
File Explorer and shell	33
Settings	27
Search	24
Security and sign-in	22
Secure Boot	19
Networking	12
Hyper-V and virtualization	9
Emoji and input	7
Kernel	6
Storage and file systems	5
Remote Desktop	4

Verified in package: changed files confirm Country and Operator Settings Asset, Windows Update opt-in notifications.

Sources

Microsoft Support: KB5043131

Updated Oct 27, 2026

Cited passages from Microsoft's official notes (14)

1. [IE mode] Microsoft Edge sometimes stops responding when you use IE mode. support.microsoft.com
2. [Media playback] Playback of some media might stop when you use certain surround sound technology. support.microsoft.com
3. [Microsoft Entra single sign-on (SSO)] The SSO notice that the European Digital Markets Act (DMA) requires prompts too often. This occurs when you authenticate using a certificate. support.microsoft.com
4. [File Explorer and taskbar] Windows server stops responding when you use apps like File Explorer and the taskbar. support.microsoft.com
5. [Directory enumeration] This might fail if a directory has symbolic links that have long target names. support.microsoft.com
6. [Microsoft Defender for Endpoint] Work Folders files fail to sync when Defender for Endpoint is on. support.microsoft.com
7. [Country and Operator Settings Asset] This update brings COSA profiles up to date for certain mobile operators. support.microsoft.com
8. [Windows Update opt-in notifications] They now appear when you sign in. support.microsoft.com
9. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
10. [Start menu] New! This update might move your profile picture to different positions. There is also a new background color for the left pane on the menu. support.microsoft.com
11. This issue is addressed in KB5046613. support.microsoft.com
12. This issue is resolved by installing the Windows updates released October 22, 2024 (KB5045594) or later updates and by applying one of the options mentioned in the Resolution section in KB5048864. support.microsoft.com
13. This issue is resolved by installing the Windows updates released October 22, 2024 (KB5045594) or later updates and by applying one of the options mentioned in the Resolution section in KB5048864. Note that you need to perform both actions to resolve the issue. support.microsoft.com
14. If you encounter this issue on your device, please contact Windows support for help 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 3/5, clarity 3/5, 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