Insider KB5079492 Windows 11 Insider Dev build 26300.8142 (25H2) - March 30


UPDATE 4/03:


 Windows Insider Blog:

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 26300.8142 (KB 5079492) to the Dev Channel.

Changes in Dev Channel builds and updates are documented in two buckets: new features, and improvements (including notable fixes) that are being gradually rolled out for Insiders who have turned on the toggle to get the latest updates as they are available (via Settings > Windows Update*) and then new features, and improvements (including notable fixes) rolling out to everyone in the Dev Channel. For more information, see the Reminders section at the bottom of this blog.


Changes and Improvements gradually being rolled out with toggle on*

[Administrator Protection]

  • After resuming the rollout of Administrator Protection as enabled by IT admins, we are also now rolling out the ability to enable Administrator Protection in Settings under Privacy & security > Windows Security > Account protection and switching the toggle to on. A restart will be required.

[Touchpad]

  • We’re adding a new setting in Settings > Bluetooth & Devices > Touchpad so you can choose how large the right-click zone size is (this is the portion in the bottom-right of your touchpad where pressing a single finger will result in a right-click), between default, small, medium, and large. Note – this setting only appears for touchpads that have a pressable surface for this. Some manufacturers may provide customization for this in their own apps – if you’ve customized your setting using an app like this, a “Custom” entry will be added to the dropdown, which preserves that value.

Feedback: Share your thoughts in Feedback Hub (WIN + F) under Input and Language > Touchpad.

[Task Manager]

We’re making a few improvements to Task Manager:
  • We’re updating Task Manager to provide better insight into NPU usage for PCs that include an NPU. New optional NPU and NPU Engine columns are now available on the Processes, Users, and Details pages. The Details page also adds NPU Dedicated Memory and NPU Shared Memory optional columns to give you deeper visibility into how workloads are using NPU resources. Additionally, if there are neural engines that are part of a GPU, they will now appear on the Performance page, providing a more complete view of AI‑related system activity.

  • We’re also adding a new optional Isolation column to the Processes and Details pages, allowing you to see which apps are running in an AppContainer.

Once these changes are available to you, you can add any of the new columns by right‑clicking a column header in Task Manager and selecting them from the menu.


Feedback: Share your thoughts in Feedback Hub (WIN + F) under Desktop Environment > Task Manager.

[Windows Protected Print Mode]

  • We are adding a new icon to show where a printer supports Windows Protected Print Mode in print settings.


    New Windows Protected Print Mode icon.
    New Windows Protected Print Mode icon.

[Accessibility]

  • Addressed an issue impacting the use of Braille for Insiders in the last few flights.

Reminders for Windows Insiders in the Dev Channel

  • Updates are based on Windows 11, version 25H2 via an enablement package (Build 26300.8142).
  • Many features are rolled out using Controlled Feature Rollout technology, starting with a subset of Insiders and ramping up over time as 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.
  • For Windows Insiders who want to be the first to get features gradually rolled out to you, you can turn ON the toggle to get the latest updates as they are available via Settings > Windows Update*. Over time, we will increase the rollouts of features to everyone with the toggle turned on. Should you keep this toggle off, new features will gradually be rolled out to your PC over time once they are ready.
  • Features and experiences included in these builds may never get released as we try out different concepts and get feedback. Features may 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 may not be fully localized and localization will happen over time as features are finalized. As you see issues with localization in your language, please report those issues to us via Feedback Hub.
  • Check out Flight Hub for a complete look at what build is in which Insider channel.
Thanks,
Windows Insider Program Team



 Source:



Check Windows Updates


UUP Dump:

64-bit ISO download:

ARM64 ISO download:

 
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Getting it now...

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My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
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    Asus/Custom Build
    CPU
    Intel® Xeon® X5690 3.47GHz Six-Core
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    Asus P6T Deluxe v2
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    G.Skill PC3-12800 1600MHz 24GB
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    6 Crucial MX500 SSD 1TB each.
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    Thermaltake Armor VA8000SWA
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    Thermaltake Air Cooling System
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    Illuminated Multimedia LED Keyboard
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    M16 Dual Mode Illuminated Mouse - Bluetooth / 2.4 GHz Mode
    Internet Speed
    800 Mbps
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    Edge / Opera / Vivaldi / Chrome / Firefox / Brave
    Antivirus
    Windows Defender Security
Done fine...

1774907721527.webp
 

My Computer

System One

  • 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
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    Thermaltake Armor VA8000SWA
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    Thermaltake Air Cooling System
    Keyboard
    Illuminated Multimedia LED Keyboard
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    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
Downloading and installing.
1774919720651.webp
1774920675422.webp
Done:

Edition Windows 11 Pro Insider Preview
Version 25H2
Installed on ‎1/‎28/‎2026
Evaluation expires on ‎8/‎11/‎2026 11:09 AM
OS build 26300.8142
Experience Windows Feature Experience Pack 1000.26100.345.0
 
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My Computer

System One

  • OS
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Dell XPS 8930
    CPU
    Intel I9-9900K
    Memory
    64GB
    Graphics Card(s)
    NVIDIA RTX 2060
    Sound Card
    NVIDIA High Definition Audio
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    4k Samsung
    Screen Resolution
    3840 x 2160
    Hard Drives
    512GB NVMe, ADATA SU 800, 2TB HDD
Installation completed without incident.
 

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System One System Two

  • OS
    windows 10 & 11
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    PC/Desktop
    Manufacturer/Model
    iBuyPower (special build)
    CPU
    AMD Ryzen 7X
    Motherboard
    Asus Prime x370 Pro
    Memory
    64Gb
    Graphics Card(s)
    Radeon RX 480 8Gb
    Monitor(s) Displays
    Samsung UHD 27 inch
    Screen Resolution
    UHD
    Hard Drives
    3 Samsung 1 TB SSD each; 1 Samsung PCIe M.2 at 2 TB
  • Operating System
    Windows 11 pro
    Computer type
    PC/Desktop
    Manufacturer/Model
    IBuyPower
    CPU
    AMD 9 5900X
    Motherboard
    Asus x570 ROG Crosshair VIII Dark Hero WI-FI 6E ARGB
    Memory
    32 Gb
    Graphics card(s)
    Nvidia GeForce RTX 3080 Ti 12 GB GDDR6X
    Sound Card
    3D PREMIUM surround sound onboard
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    Samsung 32 inch UHD curved monitor
    Screen Resolution
    UHD
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    Samsung 980 pro 2 tb gen 4 NVMe ssd
    PSU
    850 watt consair RM850X
    Case
    Lian Li LANCOOL ONE tempered glass RGB gaming case
    Cooling
    DEEPCOOL GAMERSTORM RGB 240 mm CASTLE 240EX liquid cooler
    Keyboard
    Ares m.2 gaming keyboard
    Mouse
    Ares m.2 gaming optical mouse
    Internet Speed
    450
    Browser
    Firefox / Edge
    Antivirus
    Windows defender
    Other Info
    With all this gaming rig I am not a gamer!
Made it to Desktop nothing broken so far (Knocks on wood). :D

Winver.webp
 

My Computers

System One System Two

  • OS
    Windows 11 Pro x 2 + Insider Dev
    Computer type
    PC/Desktop
    Manufacturer/Model
    My first abomination, I call it the Money Pit One
    CPU
    Intel Core i9 12900K @ 5.2 GHz
    Motherboard
    ASUS ROG MAXIMUS Z690 HERO
    Memory
    2 x Corsair Dominator Platinum RGB (4x16GB Total) DDR5-6200 CL36 Dual Channel Kit
    Graphics Card(s)
    EVGA GeForce RTX 3080 XC3 ULTRA GAMING 10GB GDDR6X
    Sound Card
    ROG SupremeFX ALC4082 with ESS® ES9018Q2C DAC for pinpoint positioning and dynamics
    Monitor(s) Displays
    2 x Samsung 43" HDR Neo QLED Mini-LED Tizen Smart TV (QN43QN90DAFXZC) 2024
    Screen Resolution
    1920 x 1080 @ 150 DPI & 120Hz
    Hard Drives
    2 x Samsung 980 Series - 250GB PCIe Gen3. X4 NVMe 1.4 - M.2 Internal SSD (Windows 11 Pro Dual boot)
    PSU
    Corsair HX1000i 80+ Platinum Modular Power Supply 1000W
    Case
    Phanteks Enthoo Luxe Tempered Glass Full Tower Case - Black
    Cooling
    CORSAIR iCUE H150i RGB Elite 360mm Liquid CPU Cooler
    Keyboard
    Perixx PERIBOARD-732B Wireless Mini Backlit USB Keyboard with Low Profile Keys - US Layout
    Mouse
    Logitech MX Anywhere 2S Wireless Mouse
    Internet Speed
    1000 Mbps
    Browser
    Latest Version Of Firefox & Microsoft Edge Chromium Stable
    Antivirus
    ESET Internet Security
    Other Info
    LG Electronics 14x Sata Blu-ray Disk Rewriter - WH14NS4O
    2 x OREI 4K 4x2 HDMI Matrix Switch With ARC Audio Extraction, HDR & Downscaling (UHD-402D) so I can send the output of my Cable Box, Roku, or any of my 4 computers to either of my TV's separately or simultaneously.
  • Operating System
    Windows 11 Pro x 2
    Computer type
    PC/Desktop
    Manufacturer/Model
    My second abomination, I call it the Money Pit Two
    CPU
    Intel Core i9 12900K @ 5.2 GHz
    Motherboard
    ASUS ROG STRIX Z690-F GAMING WIFI
    Memory
    2 x Vengeance RGB 32GB DDR5 6400MHz CL32 Dual Channel Kit (4x16GB Total) Black
    Graphics card(s)
    ASUS TUF Gaming GeForce RTX 3070 Ti OC Edition 8 GB GDDR6X
    Sound Card
    ROG SupremeFX ALC4082 with ESS® ES9018Q2C DAC for pinpoint positioning and dynamics
    Monitor(s) Displays
    2 x Samsung 43" HDR Neo QLED Mini-LED Tizen Smart TV (QN43QN90DAFXZC) 2024
    Screen Resolution
    1920 x 1080 @ 150 DPI & 120Hz
    Hard Drives
    2 x Samsung 980 Series - 250GB PCIe Gen3. X4 NVMe 1.4 - M.2 Internal SSD (Windows 11 Pro Dual boot)
    PSU
    Corsair AX860 - 860W Modular Power Supply
    Case
    Phanteks Enthoo Pro Tempered Glass Full Tower Case - Black
    Cooling
    CORSAIR iCUE H150i RGB Elite 360mm Liquid CPU Cooler
    Keyboard
    Perixx PERIBOARD-326 Wired Mini Backlit USB Keyboard with Low Profile Keys - US Layout
    Mouse
    Logitech MX Anywhere 2S Wireless Mouse
    Internet Speed
    1000 Mbps
    Browser
    Latest Version Of Firefox & EDGE Chromium Stable
    Antivirus
    ESET Internet Security
    Other Info
    LG Electronics 14x Sata Blu-ray Disk Rewriter - WH14NS4O
    2 x OREI 4K 4x2 HDMI Matrix Switch With ARC Audio Extraction, HDR & Downscaling (UHD-402D) so I can send the output of my Cable Box, Roku, or any of my 4 computers to either of my TV's separately or simultaneously.
1774939628800.webp
 

My Computer

System One

  • OS
    Windows 11 Pro Insider Preview Dev
    Computer type
    PC/Desktop
    Manufacturer/Model
    To be filled by O.E.M.
    CPU
    AMD Ryzen™ 5 5600G with Radeon Graphics 3.90 GHz
    Motherboard
    MSI B450 GAMING PLUS MAX
    Memory
    16,0 GB
    Graphics Card(s)
    NVIDIA GeForce GT 720, NVIDIA compatible
    Sound Card
    NVIDIA High Definition Audio
    Monitor(s) Displays
    BenQ GW2270 Color Profile.D6500
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung SSD 850 EVO 250GB + CT1000BX500SSD1 + ST2000DM006-2DM164 + WDC WD5000AAKS-07TMA0 +WDC WD10EARX-00N0YB0
    PSU
    EVGA 600 W2, 80+ WHITE 600W, 3 Year Warranty, Power Supply 100-W2-0600-K2 (EU)
    Case
    RAIJINTEK Agos - mid tower - ATX
    Cooling
    Cooler Master Hyper 212 Evo heatsink + Fans: 2 front+1 back+1 up
    Keyboard
    Logitech Internet 350 Keyboard
    Mouse
    Logitech MX Revolution
    Internet Speed
    Download 159.29 Mbps - Upload 80.14 Mbps
    Browser
    Google Crome Dev
    Antivirus
    Microsoft Windows Security
1774941144903.webp
Edizione Windows 11 Pro Insider Anteprima
Versione 25H2
Data installazione: ‎28/‎01/‎2026
Dati di scadenza della valutazione ‎11/‎08/‎2026 20:09
Costruisci il sistema operativo 26300.8142
Esperienza Pacchetto di esperienze per funzionalità Windows 1000.26100.345.0
 

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System One

  • OS
    Windows 11 Pro Insider Preview Dev
    Computer type
    PC/Desktop
    Manufacturer/Model
    To be filled by O.E.M.
    CPU
    AMD Ryzen™ 5 5600G with Radeon Graphics 3.90 GHz
    Motherboard
    MSI B450 GAMING PLUS MAX
    Memory
    16,0 GB
    Graphics Card(s)
    NVIDIA GeForce GT 720, NVIDIA compatible
    Sound Card
    NVIDIA High Definition Audio
    Monitor(s) Displays
    BenQ GW2270 Color Profile.D6500
    Screen Resolution
    1920 x 1080
    Hard Drives
    Samsung SSD 850 EVO 250GB + CT1000BX500SSD1 + ST2000DM006-2DM164 + WDC WD5000AAKS-07TMA0 +WDC WD10EARX-00N0YB0
    PSU
    EVGA 600 W2, 80+ WHITE 600W, 3 Year Warranty, Power Supply 100-W2-0600-K2 (EU)
    Case
    RAIJINTEK Agos - mid tower - ATX
    Cooling
    Cooler Master Hyper 212 Evo heatsink + Fans: 2 front+1 back+1 up
    Keyboard
    Logitech Internet 350 Keyboard
    Mouse
    Logitech MX Revolution
    Internet Speed
    Download 159.29 Mbps - Upload 80.14 Mbps
    Browser
    Google Crome Dev
    Antivirus
    Microsoft Windows Security
after installing this update i getting 8 svchost.exe Crash Dump files that all refering to SVCHOSTGROUP_UnistackSvcGroup_HEAP_CORRUPTION_c0000374_wpnuserservice.dll!heap_corruption

Any one else?
 
Last edited:

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  • OS
    Windows 11 Pro (Currently 25H2)
    Computer type
    PC/Desktop
    CPU
    Intel Core i7 5820k
    Motherboard
    Asus X99A
    Memory
    32GB RAM
    Graphics Card(s)
    Nvidia RTX 5090
    Sound Card
    Intergraded
    Monitor(s) Displays
    Samsung OdysseyG7
    Screen Resolution
    4K HDR
    Hard Drives
    2x Samsung M2 990Pro 4TB
    PSU
    Corsair RM1000X
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    Fractal Design
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    In & Outtake Noctua 3000 RPMs
    Keyboard
    Razer Black widow
    Mouse
    Razer Naga Trinity
    Internet Speed
    1000Mbit
    Browser
    Edge
    Antivirus
    Custom
Did some digging the wpnuserservice.dll heap_corruption issues are caused by the Notifications from the Phone app, corruption in the Windows Push Notifications User Service..
i allso notice that copilot voice activiation is broken,. and the sync inside edge is broken as well..
 

My Computer

System One

  • OS
    Windows 11 Pro (Currently 25H2)
    Computer type
    PC/Desktop
    CPU
    Intel Core i7 5820k
    Motherboard
    Asus X99A
    Memory
    32GB RAM
    Graphics Card(s)
    Nvidia RTX 5090
    Sound Card
    Intergraded
    Monitor(s) Displays
    Samsung OdysseyG7
    Screen Resolution
    4K HDR
    Hard Drives
    2x Samsung M2 990Pro 4TB
    PSU
    Corsair RM1000X
    Case
    Fractal Design
    Cooling
    In & Outtake Noctua 3000 RPMs
    Keyboard
    Razer Black widow
    Mouse
    Razer Naga Trinity
    Internet Speed
    1000Mbit
    Browser
    Edge
    Antivirus
    Custom
 

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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,
    TerraMaster F8 SSD Plus NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
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    Amazon Basics Wired Full Keyboard MD005
    Mouse
    Logitech MX Master 4
    Internet Speed
    2 Gbps Download and 100 Mbps Upload
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
    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
    Microsoft Defender
after installing this update i getting 8 svchost.exe Crash Dump files that all refering to SVCHOSTGROUP_UnistackSvcGroup_HEAP_CORRUPTION_c0000374_wpnuserservice.dll!heap_corruption

Any one else?
Would this cause the Phone Link app to crash & exit?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    PCSpecialist
    CPU
    Intel(R) Core(TM) i7-1070
    Motherboard
    TUF GAMING B460-PLUS
    Memory
    32 GBytes DDR4-2667 (1333 MHz)
    Graphics Card(s)
    NVIDIA GeForce GT 1030
    Sound Card
    ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
    Monitor(s) Displays
    Samsung U32J590UQU
    Screen Resolution
    4k
    Hard Drives
    SYSTEM Win 10 237.22GB SSD Disk 0 238.47GB M2 (mobo)
    DATA Data 931.41GB HD 2.5" Disk 1 931.51GB SATA3
    BACKUPS Backups 2TB HD 3.5" Disk 2 2TB SATA3
    PSU
    CORSAIR 550W CV SERIES™ CV-550 POWER SUPPLY
    Case
    PCS 3601 CASE
    Cooling
    CoolerMaster Hyper 212 (120mm) Fan CPU Cooler Black Edition
    Internet Speed
    57/18 Mbps
    Browser
    Vivaldi
    Antivirus
    Kaspersky Total Security
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