October 31, 2023—KB5031455 (OS Builds 22621.2506 and 22631.2506) Preview
Improvements
Windows 11, version 23H2
Important: Use EKB KB5027397 to update to Windows 11, version 23H2.
This non-security update includes quality improvements. Key changes include:
This build includes all the improvements in Windows 11, version 22H2.
No additional issues are documented for this release.
Windows 11, version 22H2
This non-security update includes quality improvements. When you install this KB:
New! This update adds new customization options for Dynamic Lighting OEMs. You can now customize OS images for new PCs. This includes setting up Dynamic Lighting defaults.
This update addresses a known issue that affects third-party wallpaper apps. They might not work as expected when Copilot in Windows (in preview) is open. You might see the default wallpaper, or the wallpaper set in Windows instead of your custom wallpaper set in the third-party wallpaper app.
This update changes the English name of the former Republic of Turkey. The new, official name is the Republic of Türkiye.
This update supports the currency change in Croatia from the Kuna to the Euro.
This update supports daylight saving time (DST) changes in Syria. To learn more, see Interim guidance for Syria DST changes 2022.
This update addresses an issue that affects fontdrvhost.exe. It stops responding when you use Compact Font Format version 2 (CFF2) fonts.
This update addresses a memory leak in ctfmon.exe.
This update addresses a memory leak in TextInputHost.exe.
This update addresses an issue that affects Dynamic Lighting. The default provider is not applied as expected. This occurs when you set it up using Unattend files.
This update addresses an issue that affects the Windows Firewall Profile. When you are on a domain authenticated network, it detects a public domain. This is wrong.
This update addresses an issue that affects Outlook. It stops responding. This occurs when you print to an Internet Printing Protocol (IPP) printer that has a slow response time.
This update addresses an error that occurs when you print using v4 print drivers.
This update addresses an issue that affects cellular settings. The name of the mobile operator is wrong.
This update makes Country and Operator Settings Asset (COSA) profiles up to date for certain mobile operators.
This update addresses an issue that blocks external connections. This occurs when you set up a Kubernetes load balanced service and turn on session affinity.
This update addresses a Firewall configuration service provider (CSP) issue. It stops a device from syncing.
This update addresses an issue that affects devices on which you have defined Windows Information Protection (WIP) policies and set up a proxy. A stop error occurs. This happens on devices that use Microsoft Defender Application Guard. In the past, WIP was known as enterprise data protection (EDP).
This update addresses an issue that occurs after you run a Push-button reset. You cannot set up Windows Hello facial recognition. This affects devices that have Windows Enhanced Sign-in Security (ESS) turned on.
This update addresses an issue that affects PowerShell versions greater than 7.3.1. It might block scripts and not let them run in Constrained Language Mode. This occurs when you turn on a WDAC policy.
This update addresses an issue that affects the Automatically Hide the Taskbar setting. You cannot set it using the SHAppBarMessage() API.
This update improves the performance of the search box experience.
This update addresses an issue that affects robocopy. The /efsraw switch stops it from copying data properly.
This update addresses an issue that affects the Device Management (DM) client. The sync session takes longer than you expect for the enrollment status page (ESP).
This update addresses an issue that affects Dev Drive volumes. They only appear as Resilient File System (ReFS) in environments that IT manages.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
October 31, 2023—KB5031455 (OS Builds 22621.2506 and 22631.2506) Preview - Microsoft Support
Microsoft has released Windows 11 KB5031455 (OS Builds 22621.2506 and 22631.2506) Preview for Windows 11 22H2 and Windows 11 23H2.
