Microsoft has released a new Windows 11 preview build 27871 for Windows Insiders in the Canary channel.

Full build number: 10.0.27871.1000.rs_prerelease.250529-1415.

↑ New Features

↑ Power Management in Microsoft Intune

Windows 11 now supports battery saver management through Microsoft Intune, enabling IT administrators to control power-saving settings via Group Policy and MDM configurations.

This feature intelligently manages battery consumption, extending device runtime between charges. It optimizes battery life by efficiently managing power usage, limiting background activity, and reducing screen brightness while maintaining optimal performance. Automated system process management helps reduce overall energy consumption.

IT admins can enable this policy in:

• Windows 11 Local Group Policy Editor
• Microsoft Intune admin center

Find the policy at: Computer Configuration > Administrative Templates > System > Power Management > Battery Saver > "Enable persistent battery saver mode".

↑ Changes and Improvements

• Phone Link:
  Rolling out gradually to Insiders across all channels.
  • View smartphone app notifications directly in Start menu, now grouped by application.
  • Android screen mirroring can now be initiated from Start menu via device icon or bottom panel option.
  • iPhone memories accessible through Start menu. iCloud for Windows users can view recently synced photos and access their full iCloud library.
    
• Taskbar and System Tray:
  • Refined attention indicator under taskbar app icons - now wider and more noticeable.
    

↑ Fixes

• General:
  • Fixed Virtualization-Based Security (VBS) incompatibility preventing apps like VMware Workstation from launching without "Windows Hypervisor Platform" optional component.
• File Explorer:
  • Resolved search failures on Home page when network drives were disconnected.
  • Fixed Explorer crash when touching "View" button on touchscreen devices.
• Taskbar:
  • Fixed Win + Ctrl + <number> shortcut not switching between app windows at corresponding taskbar positions.
  • Resolved keyboard focus landing on Widgets button at login, potentially triggering unintended launches.
  • Fixed keyboard focus getting stuck on taskbar pane frame during Tab navigation, causing screen readers to only announce "pane".
• Settings:
  • Corrected corner radius when hovering over cards in System > About.
  • Fixed storage card displaying incorrect symbol instead of proper disk size in System > About.
• Admin Protection:
  • Resolved apps ignoring dark theme preferences when Admin Protection was active.
• Task Manager:
  • Fixed non-functional search and filtering options.
• Audio:
  • Resolved playback issues on high sample rate (e.g., 192Hz) multi-channel audio devices.
  • Fixed startup sound not playing despite being enabled.
• Input:
  • Addressed voice typing not launching from touch keyboard in Chinese (Simplified) compact layout.
  • Fixed touch keyboard symbol panel page turns inserting characters into password fields.
• Graphics:
  • Resolved unexpected window scaling/position changes after sleep on some devices.
• Voice Access:
  • Fixed "working on it" hangs during dictation.
• Other:
  • Resolved Group Policy Editor administrative templates error message.
  • Fixed XML unattended setup commands not executing during Windows installation.
  • Addressed default keyboard layout persisting during product key entry despite changes.
  • Corrected partition size display errors during Windows installation.

↑ Known Issues

• General:
  • [Important note for Copilot+ devices] Switching to Canary channel from Dev, Release Preview or stable Windows on Copilot+ devices may cause PIN/biometric login failures with error "Something went wrong, your PIN isn't available" (code 0xd0000225). Select "Set up PIN" to recover.
  • Engineers are investigating missing Acrylic effects on taskbar after update, causing black/white UI elements in some components.

Happy testing!

Source