Win Update KB5050021 Windows 11 Cumulative Update build 22631.4751 (23H2) - Jan. 14


UPDATE 1/29:


 Microsoft Support:

January 14, 2025 - KB5050021 (OS Builds 22621.4751 and 22631.4751)​

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 11, version 23H2, see its update history page.

Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.
Important: Windows updates do not install Microsoft Store application updates. If you are an enterprise user, see Microsoft Store apps - Configuration Manager. If you are a consumer user, see Get updates for apps and games in Microsoft Store.

Tip: Looking for this month's video? It is now in the Windows 11, version 24H2 article.

Highlights

  • This update addresses security issues for your Windows operating system.

Improvements

Note: To view the list of addressed issues, click or tap the OS name to expand the collapsible section.

Windows 11, version 23H2​

Important: Use EKB KB5027397 to update to Windows 11, version 23H2.

This security update includes quality improvements. Key changes include:
  • This build includes all the improvements in Windows 11, version 22H2.
  • No additional issues are documented for this release.

Windows 11, version 22H2​

This security update includes improvements that were a part of update KB5048685 (released December 10, 2024). Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.
  • [Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b)] This update adds to the list of drivers that are at risk for Bring Your Own Vulnerable Driver (BYOVD) attacks.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.
For more information about security vulnerabilities, please refer to the Security Update Guide website and the January 2025 Security Update.

Windows 11 servicing stack update (KB5050113) - 22621.4740 and 22631.4740​

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. To learn more about SSUs, see Simplifying on-premises deployment of servicing stack updates.

Known issues in this update

Applies toSymptomWorkaround
All usersFollowing the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections. The service fails with no detailed logging, and manual intervention is required to run the sshd.exe process.
This issue is affecting both enterprise, IOT, and education customers, with a limited number of devices impacted. Microsoft is investigating whether consumer customers using Home or Pro editions of Windows are affected.
Customers can temporarily resolve the issue by updating permissions (ACLs) on the affected directories. Follow these steps:
  1. Open PowerShell as an Administrator.
  2. Update the permissions for C:\ProgramData\ssh and C:\ProgramData\ssh\logs to allow full control for SYSTEM and the Administrators group, while allowing read access for Authenticated Users. You can restrict read access to specific users or groups by modifying the permissions string if needed.
    Use the following commands to update the permissions:
    $directoryPath = "C:\ProgramData\ssh" $acl = Get-Acl -Path $directoryPath $sddlString = "O:BAD:PAI(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;0x1200a9;;;AU)" $securityDescriptor = New-Object System.Security.AccessControl.RawSecurityDescriptor $sddlString $acl.SetSecurityDescriptorSddlForm($securityDescriptor.GetSddlForm("All")) Set-Acl -Path $directoryPath -AclObject $acl
  3. Repeat the above steps for C:\ProgramData\ssh\logs.
Microsoft is actively investigating the issue and will provide a resolution in an upcoming Windows update. Further communications will be provided when a resolution or additional workarounds are available.
IT adminsDevices that have certain Citrix components installed might be unable to complete installation of the January 2025 Windows security update. This issue was observed on devices with Citrix Session Recording Agent (SRA) version 2411. The 2411 version of this application was released in December 2024.

Affected devices might initially download and apply the January 2025 Windows security update correctly, such as via the Windows Update page in Settings. However, when restarting the device to complete the update installation, an error message with text similar to “Something didn’t go as planned. No need to worry – undoing changes” appears. The device will then revert to the Windows updates previously present on the device.

This issue likely affects a limited number of organizations as version 2411 of the SRA application is a new version. Home users are not expected to be affected by this issue.
Citrix has documented this issue, including a workaround, which can be performed prior to installing the January 2025 Windows security update. For details, see Citrix’s documentation.
Microsoft is working with Citrix to address this issue and will update this documentation once a resolution is available.

How to get this update

Before you install this update

Microsoft combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions.

Install this update

To install this update, use one of the following Windows and Microsoft release channels.

AvailableNext Step
YesNone. This update will be downloaded and installed automatically from Windows Update and Microsoft Update.
YesTo get the standalone package for this update, go to the Microsoft Update Catalog website.

If you want to remove the LCU

To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.

Running Windows Update Standalone Installer (wusa.exe) with the /uninstall switch on the combined package will not work because the combined package contains the SSU. You cannot remove the SSU from the system after installation.

File information

For a list of the files that are provided in this update, download the file information for cumulative update 5050021.

For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5050113) - versions 22621.4740 and 22631.4740.



 Source:



Check Windows Updates


UUP Dump:

64-bit ISO download:

ARM64 ISO download:

 

Attachments

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Last edited:
Thanks @Brink !
Your reminders and info are great, and much appreciated. (y)

All went perfect without a hitch!

WindowsUpdate.webp
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 (OS Build 26100.3037)
    Computer type
    Laptop
    Manufacturer/Model
    Dell Precision Mobile Workstation
    CPU
    Intel(R) Xeon(R) CPU E3-1535M v5 @ 2.90 Max Turbo 3.80
    Motherboard
    00V5FJ
    Memory
    64GB DDR4 ECC (Error-Correcting Code memory)
    Graphics Card(s)
    NVIDIA Quadro M2000M 4GB GDDR5 & Intel(R) HD Graphics P530
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    15.6" 4K UltraHD
    Screen Resolution
    3840x2160
    Hard Drives
    2TB Crucial NVMe & 2TB Seagate SATA
    PSU
    Dell 180W 19.5V-9.23A
    Mouse
    Logitech G703
    Internet Speed
    WIFI: Intel(R) Dual Band Wireless-AC 8260
    Browser
    Mozilla Firefox
    Antivirus
    Windows Defender/Microsoft Security + additional Anti Spyware, Anti Malware, etc.
    Other Info
    Thunderbolt 3
  • Operating System
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Precision Workstation T5610
    CPU
    Dual Intel(R) Xeon(R)
    Memory
    64GB ECC
Update hung at 25% other than that it went well. DISM and SFC found no mistakes. Time will tell!:unsure:
 

My Computer

System One

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    HP ENVY
    CPU
    11th Generation Intel Core i7
    Memory
    12GB
    Monitor(s) Displays
    17.3” FHD Display
'Bout 3½ minutes. All is well.

9221.webp
 

My Computers

System One System Two

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    ASUS ROG Strix
  • Operating System
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    ASUS VivoBook
I expect 24H2 update but got continuation of 23H2 update why?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    Lenovo Ideapad Gaming
Mine wasn't perfect, it has the long-standing known issues for 23H2 and 22H2. Mainly CBS reporting corrupted Bluetooth system file(s) after a new CU was applied. It didn't have to be this way, the Bluetooth file issue started in summer, 2022 for 11 users. So, the issue was around since 21H2.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro x64 23H2
    Computer type
    PC/Desktop
    CPU
    Ryzen 9 5900X
    Motherboard
    ASRock B550 PG Velocita (UEFI-BIOS P3.40)
    Memory
    32 GB G.Skill F4-3200C16D-32GVR
    Graphics Card(s)
    Sparkle Titan Arc A770 16 GB
    Monitor(s) Displays
    Alienware AW3423DWF OLED ultrawide
    Hard Drives
    Western Digital Black SN850 1 TB NVMe SSD
    PSU
    eVGA Supernova 750 G3
    Case
    Corsair 275R
    Internet Speed
    VTel FTTH 1 Gb down and 1 Gb up
  • Computer type
    PC/Desktop
    CPU
    Ryzen 7 5800X3D
    Motherboard
    Asus ROG Strix B550-F Gaming (UEFI-BIOS version 3607)
    Memory
    32 GB (2x16 GB G.Skill TridentZ Neo)
    Graphics card(s)
    Sapphire Nitro+ Radeon RX 6750 XT
    Hard Drives
    Samsung 970 Pro 512 GB NVMe SSD
    PSU
    eVGA Supernova 650 GQ
    Case
    Fractal Focus G
I expect 24H2 update but got continuation of 23H2 update why?
Did you try looking in Windows update Advanced options Optional Updates? Might be there after an update check...shows up on one of my PCs but I won't take 24H till they fix the dang thing.
 

My Computer

System One

  • OS
    Windows 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    N/A
    CPU
    AMD Phenom(tm) II X4 965 Processor 3.40 GHz
    Motherboard
    Gigabyte GA-770T USB3
    Memory
    12gb
    Graphics Card(s)
    Nvidia GTX950
    Sound Card
    Realtek 888
    Monitor(s) Displays
    Acer
    Screen Resolution
    1920x1080
    Hard Drives
    1TB SSD Vulcan Z
    Keyboard
    Logitech
    Internet Speed
    600
    Browser
    Firefox
    Antivirus
    Windows Defender
@Brink, hi.

No news for 28th Jan 23H2 updates?
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 Build 22631.4249
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (4th Gen?)
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    Onboard
    Monitor(s) Displays
    4 x LG 23MP75 - 2 x 24MK430H-B - 1 x Wacom Pro 22" Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list.
    OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech G402 / G502 / Mx Masters / MX Air Cordless
    Internet Speed
    100/40Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    I’m on a horse.
  • Operating System
    Windows 11 Pro 23H2 Build: 22631.4249
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7i EVO OLED 14" Touchscreen i5 12 Core 16GB/512GB
    CPU
    Intel Core 12th Gen i5-1240P Processor (1.7 - 4.4GHz)
    Memory
    16GB LPDDR5 RAM
    Graphics card(s)
    Intel Iris Xe Graphics Processor
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512GB
    Other Info
    …still on a horse.

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gbps Download and 35 Mbps Upload
    Browser
    Google Chrome
    Antivirus
    Microsoft Defender and Malwarebytes Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gbps Download and 35 Mbps Upload
    Browser
    Google Chrome
    Antivirus
    Microsoft Defender and Malwarebytes Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Windows Defender

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