Windows 11 build 25931.1000

10.0.25931.1000.rs_prerelease.230811-1316
	Build of Gallium
OS family	Windows 11 (NT 10.0)
Version number	10.0
Build number	25931
Build revision	1000
Architecture	AMD64, ARM64
Build lab	rs_prerelease
Compiled on	2023-08-11
Expiration date
Timebomb	2024-09-15 (+401 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
About dialog

Windows 11 build 25931.1000 is an Insider Preview build of Gallium, the 24H1 development semester of Windows as a service. It was released to Windows Insiders in the Canary Channel on 16 August 2023, along with its server counterpart.

New features and changes[edit | edit source]

File Explorer[edit | edit source]

Several property fields (e.g., drive information, image dimensions, number of pages) have been re-added to the new Details pane. This change was previously implemented in build 23516.

Shell[edit | edit source]

The ability to label system apps under Start menu's All Apps section, initially implemented in build 23481, has been ported to this build.

Miscellaneous[edit | edit source]

The timebomb has been extended from 15 September 2023 to 15 September 2024.
The Photos and People apps can be uninstalled manually.
Starting from this build, NetBIOS/WINS/mailslot-based methods for domain controller discovery were disabled by default. This behavior can be manually reverted with the BlockNetBIOSDiscovery Group Policy setting.
DC locator will automatically download additional information about the child domains in trusting forests and use that information as part of the discovery algorithm.
The boot environment now supports DEFLATE compression (type 7) in RtlDecompressBuffer, making use of an unidentified zlib version.

Bugfixes[edit | edit source]

Fixed a major issue that was preventing users from connecting over SMB to a third-party storage device using guest (no username or password) credentials.
Fixed the issue that was causing the Safely Remove Hardware icon in the system tray on the taskbar to sometimes disappear.

Bugs and quirks[edit | edit source]

Adjusting screen brightness may not work on some laptops.
The icons on the desktop may appear blank in certain cases. Refreshing the desktop would resolve this issue.
Text on highlighted items in Microsoft Management Console and some of its snap-ins may have a yellow color.
explorer.exe may throw an Unknown Hard Error error and get stuck in a crash loop when logging in to Safe mode, due to the 0xc0000005 (ACCESS_VIOLATION) exception with faulting module HolographicExtensions.dll.