Win Update KB5041865 Windows 11 Cumulative Update Preview build 26100.1591 (24H2) on Copilot+ PCs - Aug. 27


UPDATE 9/10:


  Microsoft Support:

August 27, 2024 - KB5041865 (OS Build 26100.1591) Preview​

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types.

Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.

Important: Windows 11, version 24H2 is targeting Copilot+ PCs devices and devices that were previously using Windows Insider 24H2 builds.

Highlights

Gradual rollout​

These might not be available to all users because they will roll out gradually.
  • [Widgets Board] We are rolling out an update to the Widgets Board to improve security and the APIs for creating widgets and feeds for users in EEA regions. As part of this update, the Microsoft Start Experiences app will power the Microsoft Start widget and feed experiences. Also, as part of this update, some existing widgets will be removed and others will be modified, temporarily affecting their functionality. This update sets the foundation for new widgets and other features in development, set to roll out soon.
  • [Windows Share] New! You can now share content to your Android device from the Windows Share window. To do this, you must pair your Android device to your Windows PC. Use the Link to Windows app on your Android device and Phone Link on your PC.

  • [File Explorer]
    • When you press Windows logo key + E, a screen reader might say a pane has focus, or the focus might not be set at all.
    • When you press Ctrl + F, sometimes the search does not start.
    • Keyboard focus sometimes might get lost when you press Shift + Tab.
    • Screen readers do not announce when you open or browse items that are in a breadcrumb of the Open or Save dialog.
    • Screen readers do not announce when you open or browse items in the column header.
  • [Narrator] This update makes scan mode respond quicker. This is especially helpful when you use Microsoft Edge and read large documents. To use scan mode, you must turn on Narrator first (Windows logo key + Ctrl + Enter). Then, turn on scan mode by pressing Caps lock + Spacebar during a Narrator session.

Improvements​

This non-security update includes quality improvements. 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.
  • [FrameShutdownDelay] The browser ignores its value in the “HKLM\SOFTWARE\Microsoft\Internet Explorer\Main” registry key.
  • [Domain Name System (DNS)] A deadlock occurs in the domain controller (DC) when it starts up in the DNS client.
  • [OpenSSH] This update adds a prompt that asks you to confirm when you turn on OpenSSH using the Server Manager UI.
  • [Unified Write Filter (UWF) and Microsoft System Center Configuration Manager (SCCM)] An SCCM task to re-enable UWF fails because of a deadlock in UWF. This stops the device from restarting when you expect it.
  • [vmswitches] They fail to enumerate using Get-VMSwitch command.
If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device.

Windows 11 servicing stack update (KB5042114) - 26100.1591​

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.

Known issues in this update

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

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
Yes (Windows Update)Go to Settings > Update & Security > Windows Update. In the Optional updates available area, you will find the link to download and install the update.
Yes (MSU)To 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 5041865.

For a list of the files that are provided in the servicing stack update, download the file information for the SSU (KB5042114) - version 26100.1591.



 Source:



Check Windows Updates


UUP Dump:

64-bit ISO download:

ARM64 ISO download:

 
Last edited:
While this update installed fine for me, I've now opted out of the Release Preview and the Windows Insider programme completely for now following issues with Star Wars: Outlaws and Avatar: Frontier of Pandora on Windows 11 24H2. Granted, those are the only two games affected by being on a release preview build but it is still annoying to discover that I cannot play a game properly that I paid for because it crashes every 10-20 minutes.

Hopefully, whatever it is with Windows 11 24H2 that is causing these crashes will be addressed before the official release otherwise more people are going to be experiencing this. Not sure if this is a specific problem with the games themselves (since both use the Snowdrop engine and have RT features that cannot be disabled) or with Windows 11 24H2 itself. Hopefully, it is the former because Microsoft don't have a very good track record in my opinion for fixing issues like this...

Anyway, I am going to be sticking with stable release builds of Windows going forward.
I wondered whether this was a widespread issue.

It may be.

 

My Computers

System One System Two

  • OS
    Windows 11 26100.3025
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Amd Threadripper 7970X
    Motherboard
    Gigabyte TRX50 Aero D
    Memory
    128GB (4 X 32) G.Skill DDR5 6400 (RDIMM)
    Graphics Card(s)
    Gigabyte RTX 4090 OC
    Sound Card
    none (USB to speakers), Realtek
    Monitor(s) Displays
    Philips 27E1N8900 OLED
    Screen Resolution
    3840 X 2160 @ 60Hz
    Hard Drives
    Crucial T700 2TB M.2 NVME SSD
    WD 4TB Blue SATA SSD
    Seagate 18TB IronWolf Pro
    PSU
    BeQuiet! Straight Power 12 1500W
    Case
    Lian Li 011 Dynamic Evo XL
    Cooling
    SilverStone Technology XE360-TR5, with 3 Phanteks T30 fans
    Keyboard
    Logitech K120 (wired)
    Mouse
    Logitech M500s (wired)
    Internet Speed
    2000/300 Mbps (down/up)
  • Operating System
    windows 11 26100.3025
    Computer type
    PC/Desktop
    Manufacturer/Model
    homebuilt
    CPU
    Intel I9-13900K
    Motherboard
    Asus RoG Strix Z690-E
    Memory
    64GB G.Skill DDR5-6000
    Graphics card(s)
    Gigabyte RTX 3090 ti
    Sound Card
    built in Realtek
    Monitor(s) Displays
    Asus PA329C
    Screen Resolution
    3840 X 2160 @60Hz
    Hard Drives
    WDC SN850 1TB
    8TB Seagate Ironwolf
    4TB Seagate Ironwolf
    PSU
    eVGA SuperNOVA 1300 GT
    Case
    Lian Li 011 Dynamic Evo
    Cooling
    Corsair iCUE H150i ELITE CAPELLIX Liquid CPU Cooler
    Mouse
    Logitech M500s (wired)
    Keyboard
    Logitech K120 (wired)
I recently reformatted my pc, and installed this build, some older games that used to work on my previous install of Windows which was not a clean install but updated over time to 24H2 never had issues. Same hardware, its odd. Another odd issue is the directX installer that many of these older games run during the install seems to have issues installing, even manually running the dxsetup program will not work. Wasn't expecting a clean install to have more issues than and upgraded version. On the plus side the OS is very snappy.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Intel i9 14900KF
    Motherboard
    Asus z790 ProArt Creator WiFi
    Memory
    64GB Corsair Vengeance RGB
    Graphics Card(s)
    MSI 4090 Suprim X
    Sound Card
    Onboard
    Monitor(s) Displays
    1 x Asus 24". 1 x Asus 32"
    Screen Resolution
    1920x1080 & 2560 x 1440
    Hard Drives
    Multiple
    PSU
    Corsair 1200HX
    Case
    Corsair 7000D RGB
    Cooling
    Corsair H150I Capellix XT
    Keyboard
    Corsair K70 RGB MK.2
    Mouse
    Corsair M55 RGB Pro
    Internet Speed
    1000Mb/s
    Browser
    Edge
    Antivirus
    Windows Default
I recently reformatted my pc, and installed this build, some older games that used to work on my previous install of Windows which was not a clean install but updated over time to 24H2 never had issues. Same hardware, its odd. Another odd issue is the directX installer that many of these older games run during the install seems to have issues installing, even manually running the dxsetup program will not work. Wasn't expecting a clean install to have more issues than and upgraded version. On the plus side the OS is very snappy.

Any chance it's MS anti-cheat software gone crazy?
 

My Computer

System One

  • OS
    Windows 11
Any chance it's MS anti-cheat software gone crazy?
Nope, most of these older games don't use any real copy protection other than Steam. Even tired the GOG versions with similar results.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Intel i9 14900KF
    Motherboard
    Asus z790 ProArt Creator WiFi
    Memory
    64GB Corsair Vengeance RGB
    Graphics Card(s)
    MSI 4090 Suprim X
    Sound Card
    Onboard
    Monitor(s) Displays
    1 x Asus 24". 1 x Asus 32"
    Screen Resolution
    1920x1080 & 2560 x 1440
    Hard Drives
    Multiple
    PSU
    Corsair 1200HX
    Case
    Corsair 7000D RGB
    Cooling
    Corsair H150I Capellix XT
    Keyboard
    Corsair K70 RGB MK.2
    Mouse
    Corsair M55 RGB Pro
    Internet Speed
    1000Mb/s
    Browser
    Edge
    Antivirus
    Windows Default
Another odd issue is the directX installer that many of these older games run during the install seems to have issues installing, even manually running the dxsetup program will not work.
DirectX is now part of the Windows install process - you don't have to install it separately on 24H2,
 

My Computer

System One

  • OS
    Windows 11 Pro 24H2 (Build 26100.3037)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell Precision 3660 Tower Workstation
    CPU
    12th Gen Intel(R) Core(TM) i9-12900 5.10 GHz
    Motherboard
    64-bit operating system, x64-based processor
    Memory
    32.00 GB
    Graphics Card(s)
    Intel UHD Graphics 770
    Sound Card
    Realtek Audio
    Monitor(s) Displays
    Dell P2714H Monitor
    Screen Resolution
    1920 x 1080
    Hard Drives
    1 x 512GB NVME PC801 NVMe SK hynix - BOOT
    1 x 1TB Seagate ST1000LM049-2GH172 Internal HDD
    1 x 1TB Seagate STGX4000400 External HDD
    1 x 2TB Seagate STGX4000400 External HDD
    1 x 4TB Seagate STGX4000400 External HDD
    PSU
    300 Watts
    Cooling
    Air
    Keyboard
    Microsoft Wired Keyboard 600
    Mouse
    Microsoft USB Basic Optical Mouse v2.0
    Browser
    Firefox
    Antivirus
    Windows Defender + Malwarebytes Premium
    Other Info
    BaseBoard Manufacturer Dell Inc.
    BaseBoard Product 0J1CP3
    BaseBoard Version A01
I recently reformatted my pc, and installed this build, some older games that used to work on my previous install of Windows which was not a clean install but updated over time to 24H2 never had issues. Same hardware, its odd. Another odd issue is the directX installer that many of these older games run during the install seems to have issues installing, even manually running the dxsetup program will not work. Wasn't expecting a clean install to have more issues than and upgraded version. On the plus side the OS is very snappy.
When it was first introduced, my install was a mess till I realized the culprit behind it, I could not even install VisualC++. BTW:
Code:
winget install Microsoft.DirectX --accept-package-agreements --accept-source-agreements

rem OpenCL™ and OpenGL® Compatibility Pack
winget install --id 9NQPSL29BFFF --exact --source msstore --accept-package-agreements --accept-source-agreements
 

My Computer

System One

  • OS
    Windows 11 Home
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 5 8600G (07/24)
    Motherboard
    ASROCK B650M-HDV/M.2 3.15 (07/24)
    Memory
    2x32GB Kingston FURY DDR5 5600 MHz CL36 @4800 CL40 (07/24)
    Graphics Card(s)
    ASROCK Radeon RX 6600 Challenger D 8G @60FPS (08/24)
    Sound Card
    Creative Sound BlasterX AE-5 Plus (05/24)
    Monitor(s) Displays
    24" Philips 24M1N3200ZS/00 (05/24)
    Screen Resolution
    1920×1080@165Hz via DP1.4
    Hard Drives
    Kingston KC3000 NVMe 2TB (05/24)
    ADATA XPG GAMMIX S11 Pro 512GB (07/19)
    PSU
    Seasonic Core GM 550 Gold (04/24)
    Case
    Fractal Design Define 7 Mini with 3x Noctua NF-P14s/12@555rpm (04/24)
    Cooling
    Noctua NH-U12S with Noctua NF-P12 (04/24)
    Keyboard
    HP Pavilion Wired Keyboard 300 (07/24) + Rabalux 76017 Parker (01/24)
    Mouse
    Logitech M330 Silent Plus (04/23)
    Internet Speed
    500/100 Mbps via RouterOS (05/21) & TCP Optimizer
    Browser
    Edge & Brave for YouTube & LibreWolf for FB
    Antivirus
    NextDNS
    Other Info
    Backup: Hasleo Backup Suite (PreOS)
    Headphones: Sennheiser RS170 (09/10)
    Phone: Samsung Galaxy Xcover 7 (02/24)
    Chair: Huzaro Force 4.4 Grey Mesh (05/24)
    Notifier: Xiaomi Mi Band 9 Milanese (10/24)
    2nd Monitor: AOC G2460VQ6 @75Hz (02/19)

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Intel i9 14900KF
    Motherboard
    Asus z790 ProArt Creator WiFi
    Memory
    64GB Corsair Vengeance RGB
    Graphics Card(s)
    MSI 4090 Suprim X
    Sound Card
    Onboard
    Monitor(s) Displays
    1 x Asus 24". 1 x Asus 32"
    Screen Resolution
    1920x1080 & 2560 x 1440
    Hard Drives
    Multiple
    PSU
    Corsair 1200HX
    Case
    Corsair 7000D RGB
    Cooling
    Corsair H150I Capellix XT
    Keyboard
    Corsair K70 RGB MK.2
    Mouse
    Corsair M55 RGB Pro
    Internet Speed
    1000Mb/s
    Browser
    Edge
    Antivirus
    Windows Default
Is this the final / last insider build for 24h2 before release?
Do i brake something if i opt out the insider?
 

My Computer

System One

  • OS
    Windows 11 Pro (Currently 23H2)
    Computer type
    PC/Desktop
    CPU
    Intel Core i7 5820k
    Motherboard
    Asus X99A
    Memory
    2x8 16GB RAM
    Graphics Card(s)
    Nvidia RTX 2080 TI
    Sound Card
    Intergraded
    Monitor(s) Displays
    Samsung OdysseyG7
    Screen Resolution
    4K HDR
    Hard Drives
    Samsung M2 990Pro 4TB
    PSU
    Corsair RM1000X
    Case
    Fractal Design R5
    Cooling
    Noctua 3000 RPMs
    Keyboard
    Razer Black widow
    Mouse
    Razer Naga Trinity
    Internet Speed
    1000Mbit
    Browser
    Edge
    Antivirus
    Custom
Is this the final / last insider build for 24h2 before release?
Who knows? It is said that MS are targeting a September/October release date. More likely to be October than September, I'd expect. There's nothing to suggest they won't meet their target. I doubt it will be released before the next Patch Tuesday update on 10th September, so I expect there to be at least one more update before release.

Do i brake something if i opt out the insider?
No. You should be able to Leave the Insider Release Preview channel and still get the public release updates, those are the Patch Tuesday updates and the non-security Preview updates like this one.
 

My Computers

System One System Two

  • OS
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
    Monitor(s) Displays
    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
    Hard Drives
    1TB Samsung EVO 870 SSD
    Internet Speed
    50 Mbps
    Browser
    Edge, Firefox
    Antivirus
    Defender
    Other Info
    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October 2021 it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October. Windows Update offered the 22H2 Feature Update on 20th September 2022. It got the 23H2 Feature Update on 4th November 2023 through Windows Update, and 24H2 on 3rd October 2024 through Windows Update by setting the Target Release Version for 24H2.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E4310
    CPU
    Intel® Core™ i5-520M
    Motherboard
    0T6M8G
    Memory
    8GB
    Graphics card(s)
    (integrated graphics) Intel HD Graphics
    Screen Resolution
    1366x768
    Hard Drives
    500GB Crucial MX500 SSD
    Browser
    Firefox, Edge
    Antivirus
    Defender
    Other Info
    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround. In-place upgrade to 22H2 using ISO and a workaround. Feature Update to 23H2 by manually installing the Enablement Package. In-place upgrade to 24H2 using hybrid 23H2/24H2 install media. Also running Insider Beta, Dev, and Canary builds as a native boot .vhdx.

    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro (and all my Hyper-V VMs).

    My SYSTEM FOUR is a 2-in-1 convertible Lenovo Yoga 11e 20DA, Celeron N2930, 8GB RAM, 256GB ssd. Unsupported device: currently running Win10 Pro, plus Win11 Pro RTM and Insider Dev, Beta, and RP 24H2 as native boot vhdx.

    My SYSTEM FIVE is a Dell Latitude 3190 2-in-1, Pentium Silver N5030, 8GB RAM, 512GB NVMe ssd, supported device running Windows 11 Pro, plus the Insider Beta, Dev, Canary, and Release Preview builds as a native boot .vhdx.

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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