UPDATE 9/8: KB4571756 Cumulative Update Windows 10 v2004 build 19041.508 - Sept. 8

August 11, 2020 - KB4566782 (OS Build 19041.450)

Applies to: Windows 10, version 2004, all editionsWindows Server version 2004

IMPORTANT Starting in July 2020, we will resume non-security releases for Windows 10 and Windows Server, version 1809 and later. There is no change to the cumulative monthly security updates (also referred to as the "B" release or Update Tuesday release). For more information, see the blog post Resuming optional Windows 10 and Windows Server non-security monthly updates.

IMPORTANT Starting in July 2020, all Windows Updates will disable the RemoteFX vGPU feature because of a security vulnerability. For more information about the vulnerability, see CVE-2020-1036 and KB4570006. After you install this update, attempts to start virtual machines (VM) that have RemoteFX vGPU enabled will fail, and messages such as the following will appear:
“The virtual machine cannot be started because all the RemoteFX-capable GPUs are disabled in Hyper-V Manager.”
“The virtual machine cannot be started because the server has insufficient GPU resources.”
If you re-enable RemoteFX vGPU, a message similar to the following will appear:
"We no longer support the RemoteFX 3D video adapter. If you are still using this adapter, you may become vulnerable to security risk. Learn more (https://go.microsoft.com/fwlink/?linkid=2131976)”

For more information about the various types of Windows updates, such as critical, security, driver, service packs, and so on, please see the following article.
Note Follow @WindowsUpdate to find out when new content is published to the release information dashboard.

Note This release also contains updates for Microsoft HoloLens (OS Build 19041.1113) released August 11, 2020. Microsoft will release an update directly to the Windows Update Client to improve Windows Update reliability on Microsoft HoloLens that have not updated to this most recent OS Build.

Highlights

• Updates to improve security when using input devices (such as a mouse, keyboard, or pen).
• Updates to improve security when Windows performs basic operations.
• Updates for storing and managing files.
• Updates to improve security when using Internet Explorer and Microsoft Edge Legacy.
• Updates to improve security when using Microsoft Office products.
• Updates for verifying usernames and passwords.

Improvements and fixes

This security update includes quality improvements. Key changes include:

• Addresses an issue in Universal Windows Platform (UWP) apps that allows single sign-on authentication when an app does not have the Enterprise Authentication capability. With the release of CVE-2020-1509, UWP applications might begin prompting the user for credentials.
• Security updates to the Microsoft Scripting Engine, Internet Explorer, Windows Graphics, Microsoft Graphics Component, Windows Kernel, Windows Input and Composition, Windows Media, Windows Shell, the Windows Wallet Service, Microsoft Edge Legacy, Windows Cloud Infrastructure, Windows Authentication, the Windows AI Platform, Windows Fundamentals, Windows Storage and Filesystems, Windows Update Stack, Windows File Server and Clustering, Windows Hybrid Storage Services, Windows App Platform and Frameworks, Microsoft JET Database Engine, and Windows SQL components.

If you installed earlier updates, only the new fixes contained in this package will be downloaded and installed on your device.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

Windows Update Improvements
Microsoft has released an update directly to the Windows Update client to improve reliability. Any device running Windows 10 configured to receive updates automatically from Windows Update, including Enterprise and Pro editions, will be offered the latest Windows 10 feature update based on device compatibility and Windows Update for Business deferral policy. This doesn't apply to long-term servicing editions.

Known issues in this update

Symptoms	Workaround
When using some apps, such as Microsoft Excel, users of the Microsoft Input Method Editor (IME) for Chinese and Japanese might receive an error, or the app might stop responding or close when attempting to drag using the mouse.	For more information and workaround steps, please see KB4564002.

How to get this update

Before installing this update

Microsoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security fixes. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

If you are using Windows Update, the latest SSU (KB4570334) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Release Channel	Available	Next Step
Windows Update and Microsoft Update	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	Yes	This update will automatically sync with WSUS if you configure Products and Classifications as follows: Product: Windows 10, version 1903 and later Classification: Security Updates

File information

For a list of the files that are provided in this update, download the file information for cumulative update 4566782.

Note Some files erroneously have “Not applicable” in the “File version” column of the CSV file. This might lead to false positives or false negatives when using some third-party scan detection tools to validate the build.

Source: https://support.microsoft.com/en-us/...date-kb4566782

See also:

• Improving the update discoverability experience for Windows 10
• August 2020 security update for Windows 10

Direct download links for KB4566782 MSU file from Microsoft Update Catalog:

Download KB4566782 MSU for Windows 10 v2004 32-bit (x86) - 105.1 MB

Download KB4566782 MSU for Windows 10 v2004 64-bit (x64) - 316.8 MB

Download KB4566782 MSU for Windows 10 v2004 ARM64 - 322.5 MB

How to Find Windows 10 Version Number

How to Find Windows 10 Build Number

Known issues and notifications for Windows 10 version 1809 and Windows Server 2019 - Windows Release Information | Microsoft Docs

Resolved issues for Windows 10 version 1809 and Windows Server 2019 - Windows Release Information | Microsoft Docs

Posted By: Brink
11 Aug 2020