Windows 11 Canary Build 27891 – New Features, Fixes, and Known Issues Explained

If you’re tracking the future of Windows 11, you’ll be excited to know that the latest Canary Channel Insider Build 27891 has arrived, and it brings several under-the-hood improvements, a hidden feature, and fixes that target performance and user experience. This article breaks it all down for you — from new UI elements to bug fixes and known issues you should be aware of before updating.

Windows 11 Canary Build 27891 – New Features, Fixes, and Known Issues Explained

Let’s dive into what’s new, what’s fixed, and what still needs attention.


🆕 What’s New in Windows 11 Insider Canary Build 27891

🔋 1. Hidden Feature: New Battery Icon with Color & Percentage on Lock Screen

Discovered by PhantomOfEarth on X.com (formerly Twitter), there’s an unannounced UI update that introduces a colorful battery icon with percentage display directly on the lock screen. This enhancement aims to offer better visibility of battery status at a glance.

However, this feature isn’t fully stable yet:

  • Sometimes it reverts to the old battery icon.
  • It’s currently hidden and likely to be rolled out officially in a future release.

If you’re someone who loves trying out early features, this is definitely worth watching!


🛠️ 2. Windows PowerShell 2.0 Deprecated

Microsoft has officially removed Windows PowerShell 2.0 in this build. The company plans to share more detailed information about this removal and alternatives in an upcoming Windows 11 update.


🛍️ 3. Microsoft Store Update: Easier App Installation

The Microsoft Store has been updated to allow direct app installation from the homepage and featured sections.

How it works:

  • When you scroll through the main page, you’ll now see “Install” or “Buy” buttons under featured apps.
  • You can also go to Downloads > Get Updates to upgrade your Store app to the latest version.

This streamlines the installation process, making app discovery and installation much faster.


🧰 Fixes and Improvements in Build 27891

This build focuses heavily on stability and bug fixes. Here’s a list of key areas where Microsoft has improved the system:

🔧 System Settings & UI Fixes

  • Reset This PC: Previously broken in recovery settings — now fixed.
  • Taskbar Transparency: The acrylic blur effect that disappeared in earlier builds has been restored.
  • Windows Update Bug: Fixes an issue where update downloads were stuck at 2%.
  • Language Rendering: Characters in Vietnamese, Arabic, Thai, and Hebrew were not displaying correctly — now resolved.
  • File Explorer Path Dropdown: Dropdown was cut off at the bottom — now renders fully.
  • Microphone Settings Crash: Resolved an issue where opening microphone properties crashed the settings app.
  • Bluetooth Settings Crash: Bluetooth-related crashes in Settings and Quick Settings are fixed.

🖼️ Task Manager & UI Rendering

  • CPU Graph Calculation: The CPU performance page now reflects the new utility calculation correctly.
  • System Idle Process Bug: Fixed an error where the idle process incorrectly displayed 0%.
  • Media Playback: Playback controls in Media Player no longer appear distorted.
  • Fonts and Menus: Fixes font rendering issues where items looked corrupted or overlapped.
  • Minimize Animation: Window minimize animation now behaves correctly.

🔊 Audio & Accessibility

  • System Sounds: A fix for system notification sounds not playing even though audio worked otherwise.
  • Hebrew & Thai Typing: Period and space characters rendering incorrectly — now displays accurately.

🖨️ Printing & LDAP

  • Print Preview: Fixes blur issues in print previews.
  • LDAP Performance: Apps using LDAP queries will now perform faster, addressing lag from previous builds.

⚠️ Known Issues in Build 27891

Despite numerous fixes, some issues persist:

❌ 1. Settings Crash in Power & Battery (Laptops Only)

  • On laptops, interacting with Settings > System > Power & Battery may cause a crash.
  • Doesn’t affect desktops.

❌ 2. Remote Desktop Display Issues on ARM64 PCs

  • Using Remote Desktop on ARM64 architecture devices (like Surface Pro X) may lead to graphical glitches and rendering problems.

❓ Frequently Asked Questions

Q: How can I enable the new battery icon on the lock screen?

The feature is currently hidden and may require special flags or tools like ViveTool to activate. However, it’s buggy and not recommended for casual users.

Q: Should I install this Canary build on my main PC?

No. Canary builds are experimental and may break features. Use them only on test devices or virtual machines.

Q: How can I update the Microsoft Store to access the new layout?

Open Microsoft Store > Click on Library > Hit Get Updates.


📌 Final Thoughts

The Windows 11 Canary Build 27891 is a solid step forward with notable fixes and an interesting UI enhancement in the form of the new battery icon on the lock screen. While the feature is not officially announced, it hints at the direction Microsoft is heading for real-time UX enhancements.

The removal of Windows PowerShell 2.0 signals a further step toward modernizing the OS, and the improvements across settings, Bluetooth, UI rendering, and language support show Microsoft is paying attention to finer details.

But remember — this is still a preview build, and if you’re not comfortable troubleshooting bugs or crashes, it’s best to stick with stable versions.


🔗 Useful Links


🏷️ Tags:

windows 11 insider, canary build 27891, windows 11 updates, insider preview, microsoft updates, new windows features, windows 11 fixes, windows power user, windows developer build

📢 Hashtags:

#Windows11 #CanaryBuild #MicrosoftUpdates #WindowsInsider #Build27891 #TechNews #WindowsFeatures #WindowsFixes #PowerUserTips


💬 What do you think about the new battery icon and system improvements in Build 27891? Have you faced any bugs? Share your thoughts in the comments or let us know what features you’d like to see next.

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Mark Sullivan

Mark Sullivan

Mark is a professional journalist with 15+ years in technology reporting. Having worked with international publications and covered everything from software updates to global tech regulations, he combines speed with accuracy. His deep experience in journalism ensures readers get well-researched and trustworthy news updates.

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