Win Update KB5039866 Cumulative Update Preview .NET Framework 3.5 and 4.8.1 (22H2 and 23H2)


UPDATE 7/09:


 Microsoft Support:

June 25, 2024 - KB5039866 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2​

The June 25, 2024 update for Windows 11, version 22H2 and Windows 11, version 23H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections.

Summary​

Security Improvements

There are no new security improvements in this release. This update is cumulative and contains all previously released security improvements.

Quality and Reliability Improvements

Winforms- Addresses an issue with the size of memory leaks associated with AccessibleObjects held in memory due to ref-counting.
.NET Fundamentals- Addresses an issue with x509 certificate use under PPL in Azure AD.

Known issues in this update​

Microsoft is not currently aware of any issues in this update.

How to get this update​

Install this update

Release ChannelAvailableNext Step
Windows Update and Microsoft UpdateYesGo to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.
Windows Update for BusinessYesGo to Settings > Update & Security > Windows Update. In the Optional updates available area, you’ll find the link to download and install the update.
Microsoft Update CatalogYesTo get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)NoYou can import this update into WSUS manually. See the Microsoft Update Catalog for instructions.

File information

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

Prerequisites​

To apply this update, you must have .NET Framework 3.5 or 4.8.1 installed.

Restart requirement​

You must restart the computer after you apply this update if any affected files are being used. We recommend that you exit all .NET Framework-based applications before you apply this update.


 Source:

 
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My Computer My Computer

At a glance

Windows 11Intel® Xeon® X5690 3.47GHz Six-CoreG.Skill PC3-12800 1600MHz 24GBNVIDIA GeForce GTX 1050
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Asus/Custom Build
CPU
Intel® Xeon® X5690 3.47GHz Six-Core
Motherboard
Asus P6T Deluxe v2
Memory
G.Skill PC3-12800 1600MHz 24GB
Graphics Card(s)
NVIDIA GeForce GTX 1050
Sound Card
SoundMAX ADI AD2000B HD Audio
Monitor(s) Displays
Acer T232HL Touch Screen
Screen Resolution
1920 x 1080 @ 60Hz
Hard Drives
6 Crucial MX500 SSD 1TB each.
PSU
Thermaltake Toughpower Gold 850W
Case
Thermaltake Armor VA8000SWA
Cooling
Thermaltake Air Cooling System
Keyboard
Illuminated Multimedia LED Keyboard
Mouse
M16 Dual Mode Illuminated Mouse - Bluetooth / 2.4 GHz Mode
Internet Speed
800 Mbps
Browser
Edge / Opera / Vivaldi / Chrome / Firefox / Brave
Antivirus
Windows Defender Security
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1719527768524.png
 

My Computer My Computer

At a glance

Windows 11Intel® Xeon® X5690 3.47GHz Six-CoreG.Skill PC3-12800 1600MHz 24GBNVIDIA GeForce GTX 1050
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
Asus/Custom Build
CPU
Intel® Xeon® X5690 3.47GHz Six-Core
Motherboard
Asus P6T Deluxe v2
Memory
G.Skill PC3-12800 1600MHz 24GB
Graphics Card(s)
NVIDIA GeForce GTX 1050
Sound Card
SoundMAX ADI AD2000B HD Audio
Monitor(s) Displays
Acer T232HL Touch Screen
Screen Resolution
1920 x 1080 @ 60Hz
Hard Drives
6 Crucial MX500 SSD 1TB each.
PSU
Thermaltake Toughpower Gold 850W
Case
Thermaltake Armor VA8000SWA
Cooling
Thermaltake Air Cooling System
Keyboard
Illuminated Multimedia LED Keyboard
Mouse
M16 Dual Mode Illuminated Mouse - Bluetooth / 2.4 GHz Mode
Internet Speed
800 Mbps
Browser
Edge / Opera / Vivaldi / Chrome / Firefox / Brave
Antivirus
Windows Defender Security

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