Insider KB5124042 Windows 11 Insider Experimental (26H2) build 26340.9233 - Aug. 21



 Windows Insider Blog:

Changes and improvements gradually being rolled out

[Modernized AutoPlay experience]​

  • We've updated the AutoPlay dialog that helps you choose the preferred experience when devices are connected to your PC, such as a phone, camera, or removable drive. Rebuilt with WinUI, the refreshed experience is more consistent with the rest of Windows, supports dark mode, and continues to provide the familiar AutoPlay actions you use today. The experience is also more responsive to text scaling and display settings. Notifications for this dialog are now docked in the notification center for easy access.


    Screenshot that shows the new AutoPlay experience, shown in dark mode.
    The new AutoPlay experience, shown in dark mode.

[Accessibility]​

A simpler way to open apps maximized
  • We're introducing a new accessibility setting, Open apps maximized, that automatically maximizes app windows when they open, so you no longer have to do it yourself every time. This small change removes a bit of everyday friction, whether you use a screen reader or magnification, work in tablet mode, or simply prefer a consistent, full-screen workspace.
  • To turn it on, go to Settings > Accessibility > Visual effects, and turn on Open apps maximized. Once enabled, Windows maximizes app windows for you as they open. Give it a try, and let us know how it works for you.


    Screenshot of a UI showing the new Open apps maximized accessibility setting in Settings under Accessibility, Visual effects.

    UI showing the new Open apps maximized accessibility setting in Settings.
Feedback: Share your thoughts in Feedback Hub (WIN + F) under Accessibility > Visual effects.

[Manage camera, microphone, and location access for desktop apps]​

  • Windows Insiders can now manage camera, microphone, and location permissions for individual desktop apps. Previously, access for traditional desktop applications was managed through a single device-wide setting.
  • With this update, you can review and control access on an app-by-app basis, giving you greater visibility into which apps are requesting access to sensitive resources and more control over your privacy choices. Our goal is to make privacy permissions easier to understand and manage across the wide range of desktop apps people use every day.


    Screenshot of a UI showing the new privacy controls in Settings under Privacy and security, where you can manage camera, microphone, and location access for individual desktop apps.
    UI showing the new privacy controls for individual desktop apps in Settings.
What's changing
  • Allow or deny access for each desktop app individually.
  • Go to Settings > Privacy & security > Camera, Microphone, or Location to review and manage permissions.
  • Apps that haven't yet accessed a resource prompt for permission the first time access is requested.
What stays the same
  • Existing app permission decisions are preserved.
  • Apps previously granted access continue to have access.
  • Apps previously denied access remain denied.
  • No action is required, and no settings are reset.
  • Existing enterprise policies continue to function as designed. We're exploring additional management capabilities.
Notes
  • Most desktop apps appear with clear app attribution. However, some apps that rely on shared system components, browser-hosted experiences, or similar technologies might appear under a different name than expected.
  • Some desktop apps might appear as Unsigned if Windows can't verify publisher information. Only grant access to apps you recognize and trust.
Feedback: Share your thoughts in Feedback Hub (WIN + F) under Settings > Privacy Settings.

[File Explorer]​

  • PDF and non-HTML files downloaded from the web can now be previewed automatically in the preview pane.

[Microsoft Store]​

  • This update provides support for in-app purchases in packaged WinUI 3 apps that require elevation, helping developers offer purchases through Microsoft's integrated commerce platform.

[Taskbar]​

  • Fixed an issue in the latest builds causing taskbar animations to briefly work and then stop working.

[Input]​

  • Fixed an issue in the latest builds causing the mouse cursor not to be visible in certain apps.

[Other]​

  • Fixed an issue from the last flight causing Settings > Windows Update > Windows Insider Program > Flags to appear empty even though flags were available.

  • Updated Settings > Apps > Installed apps to show the version number at the top level for packaged apps, as it already does for other apps.

Reminders for Windows Insiders in the Experimental channel

  • Updates are based on Windows 11, version 26H2 via an enablement package (Build 26340.9233).
  • Many features are rolled out using Controlled Feature Rollout technology, starting with a subset of Insiders and ramping up over time. We monitor feedback to see how they land before pushing them out to everyone in this channel.
  • The desktop watermark shown at the lower right corner of the desktop is normal for Windows Insider pre-release builds.
  • Features and experiences included in these builds might never get released as we try out different concepts and get feedback. Features might change over time, be removed, or replaced and never get released beyond Windows Insiders. Some of these features and experiences could show up in future Windows releases when they're ready.
  • Some features in active development we preview with Windows Insiders might not be fully localized, and localization will happen over time as features are finalized. As you see issues with localization in your language, report those issues to us via Feedback Hub.
  • Check out Flight Hub for a complete look at what build is in which Insider channel.


 Source:



Check Windows Updates


UUP Dump:

64-bit ISO download:

ARM64 ISO download:

 
Last edited:
  • Like
Reactions: OAT
I can confirm the fault in mine was also in
AV_win32kfull!SetMagnificationInputTransform
 

My Computers My Computers

  • At a glance

    Windows 11 ProIntel Core i9 14900K 5800/4500 P/E96GB (2x48) G.skill Ripjaws 6800Asus ROG Strix 4070 Ti OC
    OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    DIY Photoshop/Audio/Game/tinker
    CPU
    Intel Core i9 14900K 5800/4500 P/E
    Motherboard
    Asus ROG Maximus Z790 Dark Hero
    Memory
    96GB (2x48) G.skill Ripjaws 6800
    Graphics Card(s)
    Asus ROG Strix 4070 Ti OC
    Sound Card
    B&W 606 S3 speakers; Audiolabs 7000a integrated amp; RSL 10S Mk2 sub
    Monitor(s) Displays
    Eizo CG2730 ColorEdge, ViewSonic VP2768
    Screen Resolution
    2560 x 1440 x 2
    Hard Drives
    nvme: WDC SN850X 4TB, SN850 1TB, SK-Hynix 2 TB P41
    Spinners: Sabrent USB-C DS-SC5B 5-bay docking station, 6TB WDC Black, 6TB Ironwolf Pro 2x 2TB WDC Black
    PSU
    850W Seasonic Vertex PX-850
    Case
    FD North XL Mesh, Black Walnut
    Cooling
    EK Nucleus black 360 AIO w/Phanteks T30 fans; 2 Noctua NF-A14 Chromax ; T30 for memory
    Keyboard
    Keychron Q3 Max TKL w/GMK Redsuns Red Samuri keycaps
    Mouse
    Logitech G305 wireless gaming
    Internet Speed
    575 Mb/s down | 25 Mb/s up
    Browser
    Firefox
    Antivirus
    Defender, Macrium Reflect X
    Other Info
    Phangkey Amaterasu V2 Desk Mat
  • At a glance

    Apple M1
    Computer type
    Laptop
    Manufacturer/Model
    💻 Apple 13" Macbook Pro 2020 (m1)
    CPU
    Apple M1
    Screen Resolution
    2560x1600
    Browser
    Firefox
Workaround found and reproduced on two physical machines:
vivetool /enable /id:27829265
vivetool /enable /id:61457898
Feature 61457898 is FindMyMouse_Prototype; 27829265 is the prerequisite mouse pointer/crosshair feature.
Important: the first restart after enabling 61457898 still crashes, because the current session was apparently created with the old state. After that reboot, subsequent sign-outs and restarts no longer crash.
Worked for me. Thank you!
 
Last edited:

My Computer My Computer

At a glance

Windows 11 Pro 26H2AMD Ryzen 9 9950X3D 16-Core Processor64GB Corsair DDR5 RAM @ 6000 MT/sASUS TUF Gaming GeForce RTX 4090 OC Edition 2...
OS
Windows 11 Pro 26H2
Computer type
PC/Desktop
Manufacturer/Model
Skytech / Central Computers
CPU
AMD Ryzen 9 9950X3D 16-Core Processor
Motherboard
Gigabyte X870E AORUS PRO ICE
Memory
64GB Corsair DDR5 RAM @ 6000 MT/s
Graphics Card(s)
ASUS TUF Gaming GeForce RTX 4090 OC Edition 24GB GDDR6X
Sound Card
Sound Blaster Audigy Fx V2
Monitor(s) Displays
Sony SDMU27M90 (DP HDR), Acer KA272, ASUS VG328QA1A
Screen Resolution
3840x2160 HDR
Hard Drives
Samsung SSD 990 PRO 4TB, Samsung SSD 860 EVO 1TB, Seagate ST8000DM004-2CX88 8TB
Case
Fractal Meshify 2
Cooling
Arctic Freezer III 360mm

My Computers My Computers

  • At a glance

    Windows 11 25H2Intel Core Ultra 9 275HX (24-Core)64GB DDR5 6400MT/sNVIDIA GeForce RTX 5080 and Intel UHD Graphics
    OS
    Windows 11 25H2
    Computer type
    Laptop
    Manufacturer/Model
    Alienware 18 Area-51
    CPU
    Intel Core Ultra 9 275HX (24-Core)
    Motherboard
    Alienware
    Memory
    64GB DDR5 6400MT/s
    Graphics Card(s)
    NVIDIA GeForce RTX 5080 and Intel UHD Graphics
    Sound Card
    Onboard, Realtek high-performance Audio chips (ALC3329 & ALC1708))
    Monitor(s) Displays
    300HZ 18-inch QHD 500 nit Comfort View+
    Screen Resolution
    2560 x 1600
    Hard Drives
    2TB NVMe M.2 PCIe Gen 5 SSD
    Case
    Magnesium Alloy
    Cooling
    Advanced Cryo-Tech Quad-Fan Cooling system & large vapor chamber
    Keyboard
    Cherry MX ultra low profile mechanical keyboard with per key AlienFX RGB lighting
    Mouse
    Logitech MX Master 4
    Browser
    Vivaldi (main), Firefox, Chrome, Edge
    Antivirus
    MS Defender and Malwarebytes Free
  • At a glance

    Windows 11 25H2Qualcomm Snapdragon X Elite (12 Core) ARM bas...16GB LPDDR5Qualcomm Adreno X1-85
    Operating System
    Windows 11 25H2
    Computer type
    Laptop
    Manufacturer/Model
    Microsoft Surface Laptop 7
    CPU
    Qualcomm Snapdragon X Elite (12 Core) ARM based CPU
    Motherboard
    Microsoft Corp.
    Memory
    16GB LPDDR5
    Graphics card(s)
    Qualcomm Adreno X1-85
    Sound Card
    Omnisonic speakers with Dolby Atmos spatial sound
    Monitor(s) Displays
    120 Hz 13.8-inch 600 nit PixelSense Flow touchscreen
    Screen Resolution
    2304x1536
    Hard Drives
    1TB NVMe Gen 4 SSD
    Case
    Anodized Aluminum
    Cooling
    Traditional active cooling fan system
    Keyboard
    Mechanical QWERTY, backlit when in use
    Mouse
    Logitech MX Master 4 and Surface Arc Mouse
    Browser
    Vivaldi (main), Firefox, Chrome, Edge
    Antivirus
    MS Defender and Malwarebytes Free

Latest Support Threads

Back
Top Bottom