Windows 11 build 27788

10.0.27788.1000.rs_prerelease.250131-1609
	Build of Selenium
OS family	Windows 11 (NT 10.0)
Version number	10.0
Build number	27788
Build revision	1000
Architecture	AMD64, ARM64
Build lab	rs_prerelease
Compiled on	2025-01-31
Expiration date
Timebomb	2025-09-15 (+227 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 27788 is a build of Selenium, the 25H2 development semester of Windows as a service. It was released to the Windows Insiders in the Canary Channel on 5 February 2025.

New features and changes[edit | edit source]

Features[edit | edit source]

The following previously introduced features and changes have been gradually rolled out:

Deprecation and removal of the Suggested actions feature (initially implemented in build 22635.4660)
The ability to access the Home page in the Settings app on managed commercial devices with Education, Enterprise and IoT Enterprise SKUs (previously implemented in build 27749 and can be activated manually by enabling the 53281237 velocity staging key)
The ability to restore all previously opened tabs in each File Explorer window at logon if the "Restore previous folder windows at logon" option is enabled (previously implemented in build 27783 and can be activated manually by enabling the 54572881 velocity staging key)

The following previously introduced features and changes have also been ported to this build, albeit being disabled by default:

Availability of the Recommended section under File Explorer's Home page to all users apart from Microsoft Entra ID accounts, along with its ability to show show local files (initially implemented in build 22635.4800 and can be activated manually by enabling the 48895801 and 51721485 velocity staging keys)
New accounts, enterprise-specific device info and accessibility preferences cards under the Home page in the Settings app (initially implemented in build 22635.4800 and can be activated manually by enabling the 45600144, 53371975 and 54645886 velocity staging keys)
Partially support for the Chinese (mainland China/Taiwan) and Japanese language in voice access (initially implemented in build 22635.4805 and can be activated manually by enabling the 47375114 velocity staging key)

APIs[edit | edit source]

A in-box public preview of Windows MIDI Services, an open source MIDI API for Windows, has been implemented. It's a complete rewrite of the MIDI 1.0 part of old Windows Multimedia API (which was originally implemented in Windows 3.0 with Multimedia Extensions 1.0) with full support of MIDI 2.0 standard, various enhancements, a new USB class driver, faster transports, and essential tools.^[1]
The "Location History" feature, an API used by Cortana to access 24 hours of device history when location was enabled, has been removed. Location data will no longer be saved locally, and the corresponding settings under Privacy & security → Location in the Settings app have also been removed. This removal is disabled by default, but can be activated manually by enabling the 54920368 velocity staging key.

Bugfixes[edit | edit source]

Fixed an issue that was causing multiple surfaces (including the taskbar, search, the Settings app, and lock screen) to cyclically crash in certain cases in build 27783.
Fixed an issue that was causing the SYSTEM_SERVICE_EXCEPTION bugcheck in build 27783.
Fixed an issue where the description for virtual NICs under the Network Connections Control Panel applet (ncpa.cpl) would show garbled characters.
Fixed an underlying issue that was causing scanning apps to not detect a scanner, although one was connected.
Fixed an issue that was causing text on highlighted items in Microsoft Management Console and some of its snap-ins to have a yellow color since build 25931.

Bugs and quirks[edit | edit source]

General[edit | edit source]

Enrolling to the Windows Insider Program on a new Copilot+ PC may cause Windows Hello PIN and biometrics to fail with the 0xd0000225 ("Something went wrong, and your PIN isn't available") error.
Attempting to install this build via Windows Update may fail with the 0x8007000d error. Retrying the update may resolve this issue.
Attempting to install a .NET Framework 4.8.1 update via Windows Update may fail with the 0x80073712 error. Manually installing the update using DISM may resolve this issue.
The sfc /scannow command may show errors every time it runs.
Hyper-V and other features which rely on it (such as Windows Subsystem for Linux) may not work properly.

File Explorer[edit | edit source]

When opening and then minimizing a File Explorer window, the window may not render correctly when restoring it.

Settings[edit | edit source]

The Home page may crash in certain cases.
New enterprise-specific device info and accessibility preferences cards may unexpectedly show up under the Home page on non-managed devices (with Home and Professional SKUs) signed in with Microsoft accounts.