Introduction

Microsoft has unveiled Windows 11 Insider Preview Build 26120.3872, introducing a suite of enhancements aimed at refining user experience and integrating advanced functionalities. This release, available to Beta Channel Insiders, underscores Microsoft's commitment to continuous innovation and responsiveness to user feedback.

Key Features and Enhancements

Copilot+ PC Experiences

New Text Actions in Click to Do
  • Practice in Reading Coach: This feature allows users to improve reading fluency and pronunciation by selecting on-screen text and practicing aloud. The Reading Coach provides real-time feedback, guiding users toward better reading skills. To utilize this feature, install the free Microsoft Reading Coach application from the Microsoft Store.
  • Read with Immersive Reader: Designed to enhance reading comprehension, this action presents selected text in a distraction-free environment. Users can customize text appearance, have it read aloud, and access grammar tools. This feature also requires the Microsoft Reading Coach application.
Note: These text actions are initially available on Snapdragon-powered Copilot+ PCs, with support for AMD and Intel-powered Copilot+ PCs forthcoming.

Enhanced Windows Search

Users in the European Economic Area can now search for photos stored in the cloud directly from the Windows search box on the taskbar. By describing the content (e.g., "European castles" or "summer picnics"), users can retrieve relevant photos seamlessly integrated with local search results. This enhancement leverages semantic search capabilities to improve the search experience.

Voice Access Improvements

  • Custom Vocabulary: Users can add custom words to the voice access dictionary, enhancing dictation accuracy, especially for unique or difficult-to-pronounce terms. This feature supports multiple languages, including English, French, German, Spanish, and Chinese.
  • Feature Discoverability: An immersive in-product experience now highlights new voice access features and improvements, aiding users in discovering and utilizing them effectively.
  • Quick Settings Integration: Voice access is now accessible via the Accessibility flyout in the system tray, providing quicker access to voice control features.

Additional Changes and Fixes

  • File Explorer: When launching folders from outside File Explorer (e.g., from an app or the desktop), they will now open in a new tab within an existing File Explorer window by default. Users can revert to the previous behavior via File Explorer's folder options.
  • Widgets: Users in the EEA can now control notifications per feed or dashboard, enhancing customization and reducing unwanted alerts.
  • Windows Security: The Windows Security app now displays detailed information about Pluton TPM chips, including manufacturer and version details, under Device security > Security processor details.
  • Settings: The printer renaming dialog under Settings > Bluetooth & devices > Printers & scanners has been updated to align with Windows 11's visual design.

Implications and Impact

This build signifies Microsoft's dedication to enhancing accessibility, user productivity, and system integration. The introduction of AI-driven features like Reading Coach and Immersive Reader reflects a broader trend toward intelligent, user-centric computing. Additionally, improvements in search functionality and voice access demonstrate a commitment to inclusivity and efficiency.

Technical Details

  • Build Number: 26120.3872
  • KB Article: KB5055640
  • Release Date: April 21, 2025
  • Availability: Beta Channel Insiders on Windows 11, version 24H2

Conclusion

Windows 11 Insider Preview Build 26120.3872 introduces significant enhancements that pave the way for a more intuitive and efficient user experience. By integrating advanced features and addressing user feedback, Microsoft continues to evolve Windows 11 to meet the diverse needs of its user base.

For a comprehensive list of changes and known issues, refer to the official Windows Insider Blog.