Windows 11 KB5089573 is a non-security preview update from Microsoft that accelerates app launching and core shell experiences including Start menu, Search, and Action Center. Rolling out June 9, 2026 for Windows 11 versions 25H2 and 24H2, this update marks a shift toward performance-focused improvements rather than security-only patches.
Key Takeaways
- KB5089573 accelerates app launch and core shell responsiveness across Start, Search, and Action Center
- File Explorer now prevents explorer.exe from lingering after windows close, improving system stability
- USB4 docks and hubs now turn on displays more reliably after standby, with USB3 stack improvements for unexpected hardware issues
- Touch keyboard reliability improved on sign-in screens and during password changes
- Microsoft Store download performance and bandwidth usage optimized with better error reporting
What Windows 11 KB5089573 Actually Improves
The update targets everyday friction points that frustrated users have complained about for months. Start menu responsiveness, Search performance, and Action Center snappiness are the headline improvements, but the real value lies in the cumulative effect of dozens of smaller fixes across File Explorer, clipboard history, and touch input handling. These are not theoretical optimizations—they address behaviors that slow down daily workflows.
File Explorer gets particular attention. The update fixes a long-standing annoyance where explorer.exe continues running in the background even after you close all File Explorer windows, consuming system resources unnecessarily. Clipboard history now opens and responds faster, and the touch keyboard on the sign-in screen behaves more reliably during password entry and changes. For touchscreen device users, touch gesture responsiveness improves across the board.
Hardware Reliability and USB Improvements
Beyond speed, KB5089573 strengthens system stability where hardware meets software. USB4 docks and hubs now turn on connected displays more consistently after the PC wakes from standby—a specific pain point for docking station users. The USB3 stack receives added resiliency and recovery mechanisms for unexpected hardware failures, meaning your system should recover gracefully from connection hiccups instead of dropping devices entirely.
Theme switching in Settings also stabilizes, and the input switcher no longer causes explorer.exe instability when closing. These sound like small fixes, but unreliable USB behavior and theme switching crashes have been persistent complaints in Windows 11 forums. Microsoft is directly addressing user-reported friction rather than adding new features.
Security Hardening for Scripts
A separate quality update feature introduces hardened processing mode for batch files and Command Prompt scripts, reducing runtime manipulation risks. Administrators and Application Control for Business policy authors can enable this mode, which prevents batch files from being modified while executing—a security improvement that matters for enterprise environments where script tampering is a real threat.
How KB5089573 Compares to Previous Updates
This update differs from typical Windows 11 patches because it emphasizes noticeable performance gains alongside reliability fixes. Previous monthly updates have focused primarily on security vulnerabilities and critical bug fixes. KB5089573 signals Microsoft’s commitment to addressing the performance complaints that have dogged Windows 11 since launch—users consistently reported that the OS felt slower than Windows 10 despite running on identical hardware. This update directly tackles that perception by optimizing the most-used components: the Start menu, file management, and search functionality.
FAQ
When is Windows 11 KB5089573 rolling out?
KB5089573 is rolling out on June 9, 2026 for Windows 11 versions 25H2 and 24H2. The update is classified as a non-security preview update and is now generally available.
Does Windows 11 KB5089573 require a restart?
The research brief does not specify restart requirements for this update. Check Windows Update settings on your PC for installation details specific to your system.
Will KB5089573 fix my slow File Explorer?
The update addresses File Explorer stability and prevents explorer.exe from consuming resources unnecessarily. If your File Explorer slowness stems from background processes or theme switching, this update should help. However, if slowness is caused by network drives or large folder indexing, results may vary.
Windows 11 KB5089573 represents Microsoft taking user feedback seriously. Instead of waiting for the next major version, the company is shipping performance improvements now. For anyone frustrated by sluggish Start menus or flaky USB docks, this update is worth installing immediately upon availability. The combination of speed gains and hardware reliability fixes makes this one of the more meaningful non-security updates Windows 11 has received.
Edited by the All Things Geek team.
Source: Windows Central
