Windows 11 21H2: Preview-Update KB5030301 (September 26, 2023)

[English]Microsoft has released the optional cumulative (preview) update KB5030301 for Windows 11 version 21H2 on September 26, 2023. The preview update brings a number of bug fixes for people who are still on version 21H2 (which, after all, drops out of support in October 2023). Below I give an overview regarding these updates for Windows 11.

It should be noted that this update is a so-called preview update. This is optional and must be manually triggered for download and installation by default. The update contains the fixes that will be rolled out in the security update for the following month (so all Windows 11 21H2 users will get this update by August 2023 patchday at the latest). The list of updates for Windows 11 can be viewed on this Microsoft page.

Preview update KB5030301 for Windows 11 21H2

The preview update KB5030301 has been released for Windows 11 version 21H2. The update raises the OS build to 22000.2360 and provides a fixes for this Windows version. Here is an overview of the highlights that the update brings:

This update addresses an issue that affects Microsoft Excel. It stops responding when you try to share a file as a PDF in Outlook.

Below is the complete list of fixes that this update ships.

• New! This update completes the work to comply with the GB18030-2022 requirements. It removes and remaps characters for Microsoft Wubi input and Microsoft Pinyin U-mode input. You can no longer enter character codepoints that are not supported. All the required codepoints are up to date.
• This update supports daylight saving time (DST) changes in Greenland.
• This update changes the spelling of Ukraine's capital from Kiev to Kyiv.
• This update addresses an issue that affects account lockout event 4625. The format of the event is wrong in the ForwardedEvents log. This occurs when an account name is in the user principal name (UPN) format.
• This update affects the Key Distribution Center (KDC) and user security identifiers (SID). KDC now reads the user SID from the Subject Alternative Name (SAN) of a certificate. Because of this, mobile device management (MDM) providers can use offline templates to fill in the user SID. To learn more, see KB5014754.
• This update addresses an issue that is related to changes in the forwarding of events.
• This update addresses an issue that affects XPath queries on FileHash and other binary fields. It stops them from matching values in event records.
• This update addresses an issue that affects an Application Virtualization (App-V) environment. Copy operations within it stop working. This occurs after you install the April 2023 update.
• This update addresses an issue that affects the Simple Certificate Enrollment Protocol (SCEP) certificate. The system reports some SCEP certificate installations as failed. Instead, the system should report them as pending.
• This update addresses an issue that affects Microsoft Print to PDF. It uses the metadata for the name you sign in with as the author of a printed PDF. It should use the display name instead.
• This update addresses an issue that affects some USB printers. Microsoft Defender stops them from printing.
• This update addresses an issue that affects Windows Defender Application Control (WDAC). AppID Tagging policies might greatly increase how long it takes your device to start up.
• This update addresses an issue that affects IMEPad. It stops working. This occurs when you enter end-user-defined characters (EUDC).
• This update addresses an issue that affects application compatibility. It is related to Microsoft Defender for Endpoint.
• This update addresses an issue that affects Remote Apps. The display of some elements is not aligned correctly.
• This update addresses an issue that affects the Microsoft Distributed Transaction Coordinator (DTC). It has a handle leak. Because of this, the system runs out of memory.
• This update addresses an issue that might make Windows stop responding. This might occur if you use Microsoft OneDrive files that are compressed by NTFS.
• This update addresses an issue that might cause a user-mode memory leak. It might occur when you call CopyFile() or MoveFile().
• This update addresses an issue that affects external binding. It fails. This occurs after you install Windows updates dated May 2023 or later. Because of this, there are issues that affect LDAP queries and authentication.

This list of new features and fixes will be integrated in the security update for the following month. The preview update is optional and is only offered when the user explicitly selects optional updates for installation in the settings page. The update is offered via Windows Update, but can also be downloaded and installed from the Microsoft Update Catalog. The latest Servicing Stack Update (SSU) is included to fix various issues. Further details, e.g. about the installation requirements, can be found in the support article in case of doubt. The possibly known issues are also listed there.

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Windows 10 22H2 Preview Update KB5030300 (September 26, 2023)
Windows 11 22H2: Preview Update KB5030310 (September 26, 2023)
Windows 11 21H2: Preview-Update KB5030301 (September 26, 2023)