Microsoft has released the 2026-05 Preview Update (KB5089573) for Windows 11 25H2. This optional preview update brings Build 26200.8524 and focuses mainly on performance improvements, responsiveness, reliability fixes, and quality enhancements. While this update does not introduce a major redesign, it includes several under-the-hood changes that make Windows 11 feel faster and smoother during everyday use.
What Is KB5089573?
KB5089573 is an optional preview update for Windows 11 25H2. Preview updates allow Microsoft to test upcoming fixes and improvements before they are included in the next mandatory monthly security update. Users can choose whether or not to install this update.
After installing the update, Windows 11 25H2 systems are upgraded to Build 26200.8524.
Faster Start Menu and Search Experience
One of the biggest improvements in this update is better responsiveness throughout Windows.
Users may notice:
• Faster Start Menu opening.
• Quicker Search results.
• Improved Action Center responsiveness.
• Reduced delays when interacting with Windows interface elements.
Microsoft has optimized various components to make Windows react more quickly to user input, resulting in a smoother experience.
New Low Latency Profile
A new Low Latency Profile has been introduced in this build.
This feature works automatically in the background and temporarily increases CPU responsiveness when users interact with Windows.
Benefits include:
• Faster app launches.
• Smoother UI animations.
• Improved menu responsiveness.
• Better overall system responsiveness.
The feature activates automatically when needed and does not require manual configuration.
File Explorer Reliability Improvements
Microsoft continues to improve File Explorer performance.
This update includes:
• Better folder loading performance.
• Reduced File Explorer freezes.
• Improved tab stability.
• Better responsiveness when browsing large folders.
Users who regularly work with files and folders may notice smoother navigation and fewer slowdowns.
Windows Hello Improvements
Windows Hello authentication has received several optimizations.
Improvements include:
• Faster facial recognition sign-in.
• Improved fingerprint authentication reliability.
• Reduced authentication failures.
• Better overall login experience.
These changes help users sign in more quickly and securely.
USB4 and External Device Fixes
Microsoft has addressed several hardware-related issues in this update.
Improvements include:
• Better USB 3 device compatibility.
• Improved USB 4 stability.
• Enhanced docking station support.
• More reliable external monitor detection.
• Better peripheral device connectivity.
Users who frequently connect external displays, storage devices, and docks may experience fewer
connection issues.
Bluetooth Improvements
Bluetooth functionality has also been improved.
Changes include:
• Better Bluetooth device reliability.
• Improved Bluetooth LE Audio support.
• Enhanced wireless audio experience.
• Shared Bluetooth audio support on compatible devices.
These improvements are especially useful for users with wireless headphones, earbuds, and Bluetooth speakers.
Windows Search Improvements
Microsoft has improved Windows Search efficiency.
Benefits include:
• Faster indexing performance.
• Improved search accuracy.
• Ability to find files using fewer typed characters.
• Quicker search response times.
This helps users locate files and applications more efficiently.
Performance and Stability Fixes
In addition to visible improvements, KB5089573 includes numerous bug fixes and quality updates.
These fixes address:
• System stability issues.
• Reliability problems.
• Performance bottlenecks.
• User interface inconsistencies.
• Hardware compatibility improvements.
Many of these fixes work behind the scenes to improve overall system reliability.
Should You Install KB5089573?
You should consider installing this update if:
• You want the latest Windows 11 improvements.
• You enjoy testing new features early.
• You want faster system responsiveness.
• You are experiencing File Explorer, USB, or Bluetooth issues.
You may want to wait if:
• You prefer maximum stability.
• Your PC is working perfectly.
• You only install regular monthly updates.
Since this is a Preview Update, the same fixes will likely be included in a future cumulative update.
How to Install KB5089573
Open Settings.
Open Windows Update.
Click Check for Updates.
Locate 2026-05 Preview Update (KB5089573).
Click Download & Install.
Restart your PC when prompted.
Final Thoughts
Windows 11 KB5089573 (Build 26200.8524) is primarily a performance-focused update rather than a feature-packed release. The update improves Start Menu responsiveness, Search performance, File Explorer reliability, Windows Hello authentication, Bluetooth connectivity, USB compatibility, and introduces the new Low Latency Profile. While the changes may not be immediately visible, they contribute to a faster, smoother, and more reliable Windows 11 experience for users running version 25H2.
