Windows 10 Preview Update KB5016688 (August 26, 2022)

[German]Microsoft has released an optional cumulative (preview) update KB5016688 on August 26, 2022 (D-Week). This is supposed to fix numerous bugs in Windows 10 20H2-21H2. Below I provide an overview regarding these updates for Windows 10.

The information about the updates can be found in the Windows 10 update history page. It should be noted that these updates are so-called preview or preview updates. These are optional and must be manually triggered for download and installation by default. 

Windows 10 Preview Update KB5016688

Cumulative preview update KB5016688 is available for Windows 10 Enterprise version 20H2, Windows 10 Education, Windows 10 IoT Enterprise version 20H2, and Windows 10 version 21H1 through 21H2. It lifts the build to 1904x.1949. As highlights of what has been fixed as a bug, Microsoft cites that crash error 0x1E on shutdown or reboot has been fixed:

• Addresses an issue that might cause some game installations to fail because of a licensing issue.
• Addresses an issue that affects the icon colors of the list in the Search app.
• Addresses an issue that might cause error 0x1E when you shut down or restart a device.
• Addresses a known issue that causes Microsoft Edge to stop responding when you use IE mode. This issue also prevents you from interacting with a dialog.
• Addresses an issue that causes a subscription activation to fail under certain conditions.

Below is the list of new features and fixes that Microsoft states for the update (these will go into the September 2022 security update):

• New! Gives IT admins the ability to remotely add languages and language-related features. Additionally, they can now manage language scenarios across several endpoint managers.

• New! Enhances Microsoft Defender for Endpoint's ability to identify and intercept ransomware and advanced attacks.

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• Addresses an issue that causes ServerAssignedConfigurations to be null in a few full configuration scenarios.

• Addresses a known issue that causes Microsoft Edge to stop responding when you use IE mode. This issue also prevents you from interacting with a dialog.

• Addresses an issue that affects transparency in layered windows when you are in High Definition remote applications integrated locally (RAIL) mode.

• Addresses an issue that might generate error 0x1E when you shut down or restart a device.

• Addresses an issue that causes a subscription activation to fail under certain conditions.

• Addresses an issue that might cause some game installations to fail because of a licensing issue.

• Addresses an issue that prevents virtualized App-V Microsoft Office applications from opening or causes them to stop working.

• Addresses an issue that might cause the deployment of the Windows Hello for Business certificate to fail in certain circumstances after you reset a device.

• Addresses an issue that degrades BitLocker performance.

• Addresses an issue that causes the Resultant Set of Policy tool (Rsop.msc) to stop working when it processes 1,000 or more "File System" security settings.

• Addresses an issue that continues to trust a revoked Attestation Identity Key (AIK) certificate and fails to generate a new certificate.

• Addresses an issue that causes the Take a Test app to remove all policies related to lockdown enforcement when you close the app.

• Addresses an issue that affects the jump list icon colors in the Search app.

• Addresses an issue that affects Focus Assist functionality for applications that run in full screen.

• Addresses an issue that prevents devices from receiving an offer from Windows Update for the same extension driver when that extension driver is already installed without the base driver.

• Addresses a race condition that causes the Local Security Authority Subsystem Service (LSASS) to stop working on Active Directory domain controllers. This issue occurs when LSASS processes simultaneous Lightweight Directory Access Protocol (LDAP) over Transport Layer Security (TLS) requests that fail to decrypt. The exception code is 0xc0000409 (STATUS_STACK_BUFFER_OVERRUN).

• Addresses an issue that affects a lookup for a nonexistent security ID (SID) from the local domain using read-only domain controller (RODC). The lookup unexpectedly returns the STATUS_TRUSTED_DOMAIN_FAILURE error instead of STATUS_NONE_MAPPED or STATUS_SOME_MAPPED.

• Addresses an issue that might cause cldflt.sys to reference invalid memory in race conditions.

• Addresses an issue that affects input and output in the Storport driver and might cause your system to stop responding.

The update is optional and is only offered when the user explicitly selects optional updates for installation in the settings page. The update can also be downloaded and installed from the Microsoft Update Catalog. The latest Servicing Stack Update (SSU) is integrated. Microsoft lists several known issues with this update in the support post. Further details, including the prerequisites for an installation, can be found in the support article in case of doubt.

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