This patch comes with several security bug fixes and general quality improvements for all supported versions.
KB5005565 is a mandatory security patch part of this month's Patch Tuesday and it addresses a security bug known as MSHTML (CVE-2021-40444). In addition to security fixes and improvements, you can expect fixes for Bluetooth and audio issues in today's update.
September 14, 2021 - KB5005565 (OS Builds 19041.1237, 19042.1237, and 19043.1237)
Highlights
- Updates security for your Windows operating system.
Improvements and fixes
Windows 10, version 20H2
This security update includes quality improvements. Key changes include:
- This build includes all the improvements from Windows 10, version 2004.
- No additional issues were documented for this release.
Windows 10, version 2004
This security update includes quality improvements. Key changes include:
- Addresses an issue that causes PowerShell to create an infinite number of child directories. This issue occurs when you use the PowerShell Move-Item command to move a directory to one of its children. As a result, the volume fills up and the system stops responding.


Windows Server, version 2004is a Semi-Annual Channel (SAC) Release. In our most recent Windows Server SAC releases, we've optimized for containers. In this release, we continued improving fundamentals for the core container platform such as performance and reliability. We've also worked with .NET team and PowerShell team and further optimized image size and performance for Server Core containers. We will share more details below. On container networking side, we implemented several improvements to allow for better scalability, robustness, and reliability. One example is additional changes and improvements to Direct Server Return (DSR).
Windows Server, version 20H2 is the next Semi-Annual Channel release of Windows Server, version 2004. This version focuses on reliability, performance, and other general improvements, but has no new features. Like other Semi-Annual Channel releases, it's supported for 18 months after its release.
Microsoft Corporation,leading developer of personal-computer software systems and applications. The company also publishes books and multimedia titles, offers e-mail services, and sells electronic game systems, computer peripherals (input/output devices), and portable media players. It has sales offices throughout the world.
Product:Windows Server
Version:20H2 SAC (ACore without #GUI) Build 19042.1237.vb_release_svc_prod1.210911-1432 MSDN
Supported Architectures:x64
Website Home Page :www. microsoft.com
Languages Supported:english
System Requirements:PC *
Size:3.5 Gb

Minimum:
- Processor: 1 gigahertz (GHz) or faster processor or SoC
- RAM: 2 gigabyte (GB) for 64-bit
- Hard disk space: 32 GB for 64-bit OS
- Graphics card: DirectX 9 or later with WDDM 1.0 driver
- Display: 800 x 600, a minimum diagonal display size for the primary display of 7-inches or larger.