Windows 11 build 26080

10.0.26080.1.ge_release.240308-1400

Build of Windows 11 2024 Update
OS family	Windows 11 (NT 10.0)
Version number	10.0
Build number	26080
Build revision	1
Architecture	AMD64, ARM64
Build lab	ge_release
Compiled on	2024-03-08
Expiration date
Timebomb	2024-09-15 (+191 days)
SKUs
Home (N, Single Language, China) SE (N) Pro (N, Single Language, China) Pro Education (N) Pro for Workstations (N) Education (N) Enterprise (Evaluation, G, GN, N, N Evaluation) IoT Enterprise (Subscription)
About dialog

Windows 11 build 26080 is a build of Windows 11 2024 Update. It was released to the Windows Insiders in the Dev and Canary Channels on 13 March 2024, along with its server counterpart.

It was first mentioned in a PIX on Windows blog post "PIX 2403.08 – New D3D12 features + misc PIX improvements" two days before its release, indicating it to be the first build to support GPU Upload Heaps.

New features and changes

Copilot

A new "Undock" option has been added to the ellipsis menu, allowing users to undock Copilot to a normal application window. As part of this change, the "Open in Microsoft Edge" and "Show side by side" buttons, as well as several options within the ellipsis menu have also been removed. These changes are only available to a subset of users, but can be activated manually by enabling the 45930103 and 47526251 velocity staging keys.

Shell

• A thin line has been added to the colored progress bar under taskbar's app icons.
• The Live captions toggle switch under Quick Settings, initially implemented in build 26040, has been rolled out to all users.

Settings

• A new Hearing aids subpage has been added under the Accessibility page.
• The ability to rename a printer under Bluetooth & devices > Printers & scanners has been added.
• The "Chat Providers" section under Personalization > Copilot in Windows, initially implemented in build 22635.3276, has been ported to this build. It is only available to users in European Economic Area (EEA) countries and is disabled by default. To activate it manually, enable the 45690501 and 47229774 velocity staging keys and the "Windows Copilot chat provider extensibility" policy under %SystemRoot%\System32\IntegratedServicesRegionPolicySet.json.

Miscellaneous

• Sudo for Windows has been updated to version 1.0.0.
• The "What's New" link in Windows Update history has been removed.
• A new BlockedBYSSE4.2 entry has been added to the list of compatibility blocks, and the old CPUs without SSE 4.2 instruction set will be blocked from booting the system.

Boot environment

The boot applications compiled with EFI to boot environment stubs, bootmgfw.efi and cdboot_*.efi, have been updated to versions originating from Dilithium build 27558.1000. The EFI to boot environment stub itself has been updated to check against a persistent version number stored in the UEFI revocation list dbx, and shut down the system if the check fails, as its first action (before any other code is executed). Additional changes are in place that have not been merged into the ge_release branch yet (and are therefore not present in other boot applications).

Bugfixes

General

• Fixed an issue for Narrator not working when setting up a device or in WinRE's Advanced Startup.
• Fixed an underlying issue that was leading to Snipping Tool hanging.

File Explorer

Fixed an issue where the 7-Zip and ZIP compression options weren't displaying correctly in the English (United Kingdom) display language.

Settings

Fixed an issue that was causing the Windows Update page to not load or crash in build 26063 and [[.

Input

• Fixed a high hitting ctfmon.exe crash impacting the ability to input text.
• Fixed an issue where magnifier wasn't following the mouse cursor when centered on screen.
• Fixed an issue where mouse cursor shadows (if enabled) were not rendered correctly with large cursors.
• Fixed an issue where the mouse cursor was unexpectedly leaving a trail of mice on the screen.
• Fixed an issue which could lead to some mice and keyboards not working in Safe mode.
• Fixed an issue in build 26063 where when waking the device from sleep, the touchpad might be banged out in Device Manager, resulting in the mouse cursor not showing.

Task Manager

• Fixed an issue that was causing the Performance page to unexpectedly show no GPU % used.
• Fixed an issue impacting Task Manager reliability.

Bugs and quirks

General

• Client-side anti-cheat game services may fail to work properly due to internal structure changes within this build.
• Upgrading to this build may fail with a SYSTEM_PTE_MISUSE bugcheck and a 0xC1900101 error code.
• The sudo pwsh command may not work properly.
• Shutdown and hibernation may not work correctly on certain devices, thus resulting in logging out and back in.

Shell

• Text on highlighted items in Microsoft Management Console and some of its snap-ins may have a yellow color.
• Acrylic effect on modern context menu may not render correctly.
• The mouse cursor may disappear in certain cases.
• The File Explorer tabs may be missing in certain cases.
• Image thumbnails may appear black. Refreshing manually usually fixes this issue.
• The default film reel overlays on video thumbnails may be missing.

Copilot

• Voice access and Windows Ink may not work reliably if the undocking experience for Copilot is enabled.
• Users may unable to bring focus to the ellipsis or Refresh buttons by using a keyboard if the undocking experience for Copilot is enabled.
• When Copilot is docked and resized to a large width, it may not always fill the width of the panel. Resizing Copilot to less than half of the width of the screen usually fixes this issue.

Updates

• 26080.1100.ge_release_svc_prod1.240308-1652 (KB5037133)
  • Released on 13 March 2024 to the Dev Channel
• 26080.1201.ge_release_svc_prod2.240310-0750 (KB5037135)
  • Released on 15 March 2024 to the Dev Channel
• 26080.1300.ge_release_svc_prod3.240311-1009 (KB5037139)
  • Released on 18 March 2024 to the Dev Channel
• 26080.1400.ge_release_svc_hotpatch_prod1.240311-1012 (KB5037140)
  • Released on 18 March 2024 to the Dev Channel with Virtualization Based Security (VBS) turned on (AMD64 only)

Gallery

• 

  Boot screen

• 

  Copilot in undocked window

• 

  The updated progress bar under taskbar's app icons

• 

  The Live captions toggle switch in Quick Settings

• 

  The Hearing aids page in the Settings app

• 

  The "Chat Providers" section in the Settings app

External links

• Official announcement