Microsoft has released the KB5062663 update for Windows 11, bringing OS builds 22621.5699 and 22631.5699 to users. This preview update focuses on addressing non-security issues, enhancing system stability, and improving user experience.
Source: Microsoft Support July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview - Microsoft Support
Key Improvements and Fixes
Country and Operator Settings Asset (COSA)
- Update: Profiles for certain mobile operators have been updated to ensure better compatibility and performance.
File Systems
- Resilient File System (ReFS) Fix: An issue where using backup applications on large files could lead to system memory exhaustion has been resolved.
- PDF Search Error: Addressed an error that occurred when searching for PDF files in shared folders, which previously returned incorrect messages like "No More Files" or "STATUS_NO_MORE_FILES."
Networking
- Peripheral Device Performance: Fixed a problem where peripheral devices experienced delays in functionality after resuming from hibernation on devices with active cellular connections.
Printer
- Improved Printer Identification: Printer names now display more clearly when using IPP Directed Discovery, facilitating easier identification during setup.
Stability
- System Responsiveness: Resolved an issue that caused devices to become unresponsive after installing the May 2025 security update and subsequent updates.
Input Methods
- Microsoft Changjie IME: Fixed issues affecting the Microsoft Changjie Input Method Editor for Traditional Chinese, including problems with word formation, unresponsive spacebar, and display errors in the candidate window.
- Phonetic Input Methods: Addressed malfunctions in Phonetic input methods, such as the Hindi and Marathi Phonetic keyboards, which were not working correctly after previous updates.
Taskbar
- Accessibility Icons: Corrected an issue where taskbar icons for accessibility features were not appearing as expected.
Servicing Stack Update
The update includes the Windows 11 servicing stack update (KB5062686) versions 22621.5690 and 22631.5690, which enhances the reliability of the component that installs Windows updates.Known Issues
As of this release, Microsoft has not identified any known issues with this update.Installation Instructions
The update is available through Windows Update and Microsoft Update. It will download and install automatically. For standalone packages, users can visit the Microsoft Update Catalog.Critical Advisory: Secure Boot Certificate Expiration
Microsoft has issued an important notice regarding Secure Boot certificates, which are set to expire starting in June 2026. This expiration could affect the ability of certain devices to boot securely if not updated in time. Users are advised to review the guidance and update certificates in advance to avoid disruptions. Detailed information and preparation steps are available on the Microsoft Support page.Conclusion
The KB5062663 update demonstrates Microsoft's commitment to refining the Windows 11 experience by addressing critical issues and enhancing system performance. Users are encouraged to install this update promptly to benefit from the improvements and to take proactive steps regarding the upcoming Secure Boot certificate expiration.Source: Microsoft Support July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview - Microsoft Support
