Win Update KB5064081 Windows 11 Cumulative Update Preview build 26100.5074 (24H2) - Aug. 29


UPDATE 9/09:


 Microsoft Support:

August 29, 2025 - KB5064081 (OS Build 26100.5074) Preview​

Windows Secure Boot certificate expiration

Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.

To learn about Windows update terminology, see the pages on types of Windows updates and monthly quality update types. For an overview, see the update history page for Windows 11, version 24H2.

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

Highlights

Gradual rollout​

A gradual rollout distributes a release update over a period of time instead of all at once. This means that users receive the update at different times, and it might not be immediately available to all users.
  • [Recall] New! Recall opens to a personalized homepage that puts your recent activity and top-used apps and websites front and center, making it easy to pick up where you left off. After turning on snapshot collection, the homepage highlights key productivity features like Recent Snapshots, which show the latest snapshots to help you quickly resume tasks, and Top Apps and Websites, which display the three apps and websites you’ve used most in the past 24 hours. You can set filters in Settings to control which apps and websites are saved in snapshots. A new navigation bar on the leftmost side of the screen provides quick access to Home, Timeline, Feedback, and Settings.

  • [Click to Do] New! When you launch Click to Do for the first time, you'll see a quick interactive tutorial. It shows how to complete tasks faster by demonstrating actions on both text and images—such as summarizing large blocks of text or removing image backgrounds. To revisit the tutorial later, select More options > Start tutorial.

  • [General] New! When an app requests access to location, camera, microphone, or other device capabilities, Windows shows a redesigned system dialog box. To emphasize the privacy prompt, the screen dims slightly, and the prompt appears at the center of the screen.
  • [Taskbar]
    • New! The larger clock with seconds is now back in the notification center, displayed above the date and calendar. To turn this option on, go to Settings > Time & language > Date & time, and turn on Show time in the Notification Center.

    • Fixed: If you accidentally click and drag your mouse across the taskbar preview thumbnail, the preview might stop working.
  • [Search on the Taskbar]
    • New! When you use Search from the Windows taskbar, a new grid view will help you more quickly and accurately identify the desired image within your search.
    • New! Search on the taskbar now provides clearer status information. If your search results are incomplete while your PC is organizing files in the background, Windows shows a notice with a link to check progress. You can dismiss the notice when you're done. There is also a status for files and folders, so you can easily tell whether they’re available online (cloud) or stored on your device.

  • [Lock screen] New! More widget options and support for lock screen widget personalization (previously referred to as “Weather and more”) are rolling out. After initial launch with Windows Insiders in the European Economic Area (EEA), these updates are expanding to all regions. You can add, remove, and rearrange lock screen widgets such as Weather, Watchlist, Sports, Traffic, and more. Any widget that supports the small sizing option can be added. To customize your lock screen widgets, go to Settings > Personalization > Lock screen.

  • [File Explorer]
    • New! Dividers now separate top-level icons in the File Explorer context menu.
    • New! When you're signed in with a work or school account (Entra ID), File Explorer will display people icons in the Activity column and the Recommended section at the top of File Explorer Home. Hover over or select a person's icon to open their Microsoft 365 Live Persona Card, which shows who they are and how they're connected to the file.

    • Fixed: If you try to use the unblock open in Properties for a file, it still shows as blocked when you open Properties the next time.
  • [Windows Hello]
    • New! As part of the enhanced passkey features released in September 2023, you’ll see a redesigned Windows Hello interface. These modernized visual updates support fast, clear communication that appear across multiple authentication flows, including the Windows sign-in screen, passkey, Recall, the Microsoft Store, and more.

      The Windows security credential experience for passkey offers a cleaner, more intuitive interface designed to support fast, secure sign-in. You can now easily switch between authentication options such as passkeys or connected devices.
    • Fixed: Windows Hello might recognize your face on the login screen, however it would still fail and then prompt you to enter your pin. If you continue experiencing issues, you might need to go to the Facial Recognition section under Settings > Accounts >Sign-in options and select Improve recognition.
    • Improved: Fingerprint login after standby is now more robust.
  • [Settings]
    • New!  Windows activation and expiration prompts match the Windows 11 design and appear as system notifications when action is required. There also have been improvements to messaging under Settings > System > Activation.
    • New! You can go to Settings > Privacy & security > Text and Image Generation to see which third-party apps have recently used generative AI models provided by Windows. You can also choose which apps are permitted to use them—putting you in charge of your device’s AI experience.

    • New! As part of the Copilot+ PC experience, the agent in Settings helps you quickly find and change settings. Initially available on Snapdragon®-powered Copilot+ PCs, agent in Settings now supports AMD- and Intel™-powered Copilot+ PCs. It currently works only when your primary display language is set to English.

    • Fixed: Settings might crash if you attempt to add a security key under Settings > Account > Sign-in options.
  • [Task Manager] New! Task Manager now uses standard metrics to show CPU workload consistently across all pages, aligning with industry standards and third-party tools. If you prefer the previous view, you can enable a new optional column called CPU Utility in the Details tab to display the earlier CPU usage value shown on the Processes page.

  • [Widgets]
    • New! Multiple dashboards are now available in your Widgets Board. This gives you more space for your favorite widgets and helps you stay informed with a feed that connects you to current events. A new navigation bar on the left side makes it easy to switch between your widget’s dashboard and other views like the Discover feed. After initial launch in the EEA, these updates are expanding to all regions.

    • New! A new visual experience is available for the Discover feed on the Widgets Board. The layout is more organized, personalized, and engaging. Copilot-curated stories are now included, offering a well-rounded view of each topic with summaries, videos, and images from trusted MSN premium publishers. To customize your feed, go to Widgets > Discover dashboard > Personalization settings.

  • [Windows Backup for Organizations] New! Windows Backup for Organizations is now generally available! Experience seamless device transitions with enterprise-grade backup and restore. Whether you're refreshing your organization’s devices, upgrading to Windows 11, or deploying AI-powered PCs, this solution helps sustain productivity with minimal disruption, ensuring business continuity and organizational resilience.

  • [PowerShell 2.0] Starting in August 2025, Windows 11, version 24H2, will no longer include Windows PowerShell 2.0. This legacy component was introduced in Windows 7 and officially deprecated in 2017. Most users won’t be affected, as newer versions such as PowerShell 5.1 and PowerShell 7.x remain available and supported. If you use older scripts or tools that depend on PowerShell 2.0, update them to avoid compatibility issues.

  • [Live captions] Fixed: Changing the opacity of live captions in Settings > Accessibility > Captions > Caption Style, has no effect.
  • [Input]
    • Fixed: Attempting to type Chinese with an IME after copying something with CTRL + C can result in the first character not displaying.
    • Fixed: An underlying issue related to textinputframework.dll could result in certain apps like Sticky Notes and Notepad crashing.
  • [dbgcore.dll] Fixed: An underlying issue with dbgcore.dll could result in certain apps, including explorer.exe, crashing.
  • [Kerberos] Fixed: There might be an underlying crash in Kerberos when attempting to access a cloud file share.
  • [Login] Improved: Addressed some underlying cases which could lead to you seeing a blank white screen, or a screen saying, "just a moment", for a few minutes when logging into your PC.
  • [Miracast] Fixed: An issue where, on certain devices, audio would initially play but stop a few seconds after casting to a TV.
 
Last edited:
Sorry for barging in on this thread but what do I have to do about this warning?

Windows Secure Boot certificate expiration

Important: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation steps, see Windows Secure Boot certificate expiration and CA updates.
 

My Computer

System One

  • OS
    windows11
Sorry for barging in on this thread but what do I have to do about this warning?

Windows Secure Boot certificate expiration

What do I need to do?

In most cases, nothing!
Just make sure that:
  • Your device is running a supported version of Windows 10 or Windows 11.
  • Windows updates are not paused.
  • Secure Boot is enabled (it usually is by default on newer systems).
Windows devices for home users, businesses, and schools with Microsoft-managed updates - Microsoft Support).
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
This features I havn't :
1) Show time in Notification center. (26120.4441)
2) Dividers between copy, paste and more, in File Explorere context-menu. (26120.4441)
3) CPU Utility in Task manager. (26120.3360)
 

My Computer

System One

  • OS
    26200.8037
    Computer type
    PC/Desktop
    CPU
    i5-11400F
    Motherboard
    Gigabyte
    Memory
    32GB
    Graphics Card(s)
    Geforce GT-1030
    Keyboard
    Logitech K400
    Mouse
    Logitech M720
    Internet Speed
    600 Mb
    Browser
    Edge
This features I havn't :
1) Show time in Notification center. (26120.4441)
2) Dividers between copy, paste and more, in File Explorere context-menu. (26120.4441)
3) CPU Utility in Task manager. (26120.3360)
Checking with you just in case, you know if you want to enable the "CPU Utility" legacy column, you need to go to the Details tab, right-click on the column headers, and select "Select Columns" to enable "CPU Utility" right? I have all three features.
 

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My Computers

System One System Two

  • 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
  • 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
Checking with you just in case, you know if you want to enable the "CPU Utility" legacy column, you need to go to the Details tab, right-click on the column headers, and select "Select Columns" to enable "CPU Utility" right? I have all three features.
Maybe something blocks these features. I had problem with uninstall of PowerToys and then I fixed it. I think I'll wait for clean install of public 26200.5074. 25H2. It's not worth to install this build again.
 

My Computer

System One

  • OS
    26200.8037
    Computer type
    PC/Desktop
    CPU
    i5-11400F
    Motherboard
    Gigabyte
    Memory
    32GB
    Graphics Card(s)
    Geforce GT-1030
    Keyboard
    Logitech K400
    Mouse
    Logitech M720
    Internet Speed
    600 Mb
    Browser
    Edge

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
These functions are controlled by CFR Key. As I mentioned before, you can use my registry key to enable these features.
Thank you. Can you write the specific keys for the 3 features? Because I don't want run all the keys in the file.
 

My Computer

System One

  • OS
    26200.8037
    Computer type
    PC/Desktop
    CPU
    i5-11400F
    Motherboard
    Gigabyte
    Memory
    32GB
    Graphics Card(s)
    Geforce GT-1030
    Keyboard
    Logitech K400
    Mouse
    Logitech M720
    Internet Speed
    600 Mb
    Browser
    Edge
Thank you. Can you write the specific keys for the 3 features? Because I don't want run all the keys in the file.

These keys are cumulative and most of them already exist in your system. Some keys have dependencies on each other, and it’s not worth my while to test certain key dependencies.

I have been using these keys without any problems. I wouldn't spend a lot of time testing specific functionality that depends on those keys.
 

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
Please use the search, I have marked the function in my registry key file. You can find the keys you want yourself, but remember that these keys may have dependent keys.

e46dbVb.png
 
Last edited:

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
@uncyler825
But above CPU Utility, there are only 2 keys for Emoji, that not connected to another keys.
 

My Computer

System One

  • OS
    26200.8037
    Computer type
    PC/Desktop
    CPU
    i5-11400F
    Motherboard
    Gigabyte
    Memory
    32GB
    Graphics Card(s)
    Geforce GT-1030
    Keyboard
    Logitech K400
    Mouse
    Logitech M720
    Internet Speed
    600 Mb
    Browser
    Edge

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
If you only use certain functions of the Keys may not work, because it MAY require another keys. You will need to test this yourself, since you chose not to use the all keys.
79sOZru.png
 

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
I wait that the features will come automatically. If they will not come I don't care.
 

My Computer

System One

  • OS
    26200.8037
    Computer type
    PC/Desktop
    CPU
    i5-11400F
    Motherboard
    Gigabyte
    Memory
    32GB
    Graphics Card(s)
    Geforce GT-1030
    Keyboard
    Logitech K400
    Mouse
    Logitech M720
    Internet Speed
    600 Mb
    Browser
    Edge
Windows 11 24H2/25H2 Build 26100.5074/26200.5074
R3xuGHd.png

5JykeQD.png


Windows 11 Dev Build 26220.5790
JMyUx69.png

BTjHsFD.png


Looks like Microsoft is improving the WIN + Z action experience.
 

My Computer

System One

  • OS
    Windows 11, version 25H2 (26200)
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 9 9950X 16-Core Processor
    Motherboard
    ASRock B650M PG Riptide
    Memory
    DDR5-6000 (CL36) 64.0 GB
    Graphics Card(s)
    NVIDIA GeForce RTX 4090
    PSU
    1200W
    Case
    Phanteks Enthoo Pro 2
    Cooling
    Noctua NH-D12L
still wondering about this
It's normal under the new CPU usage meter. The old cpu utility would actually go well above 100% if you viewed it in monitoring apps like HWINFO. For example mine often went to 160% using the old one, it was just artificially capped at showing 100 in the old Task Manager. The more standard meter used by monitoring apps displays a simple 0 - 100 percent meter and is now used by Task Manager.
 
Last edited:

My Computers

System One System Two

  • 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
  • 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
It's normal under the new CPU usage meter. The old cpu utility would actually go well above 100% if you viewed it in monitoring apps like HWINFO. For example mine often went to 160% using the old one, it was just artificially capped at showing 100 in the old Task Manager.
Whn did the new meter come out?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    HP
    Memory
    15GB RAM
    Hard Drives
    SSD 1TB
    Browser
    Chrome

My Computers

System One System Two

  • 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
  • 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
It hit insiders a few builds back. They are actually two different meters calculated two different ways.
So I shouldn't really worry abt it?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    Laptop
    Manufacturer/Model
    HP
    Memory
    15GB RAM
    Hard Drives
    SSD 1TB
    Browser
    Chrome
is it safe to install or does it corrupt SSD/NVME too?
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    Intel
    CPU
    7800x3D
    Motherboard
    MSI X690E TOMHAWK
    Memory
    KINGSTONE DDR5
    Graphics Card(s)
    ZOTAC 4090 AMP EXTREME
    Sound Card
    Creative SXFI AMP
    Monitor(s) Displays
    Samsung S90C
    Screen Resolution
    3840x2160
    Hard Drives
    Nmve WD850N 1TB
    SanDisk SDSSDXPS480G
    Samsung SSD 840 PRO Series 256Gb
    WDC Enterprise Gold 16TB 512MB
    WDC Enterprise Gold 6TB 256MB
    PSU
    ThermalTake ToughPower 1650
    Case
    Obsidian Series™ 750D Airflow Edition Full Tower ATX Case
    Cooling
    Arctic Liquid Freezer II 360
    Keyboard
    SteelSeries APEX PRO
    Mouse
    SwitPoint Z2
    Internet Speed
    5000/500
    Browser
    CHROME
    Antivirus
    ESET Internet Security
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