Here are the key details and highlights from the Microsoft support page for the July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview update for Windows 11 version 23H2:
Source: Microsoft Support July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview - Microsoft Support
Overview
- Release Date: July 22, 2025
- Update Version: OS Builds 22621.5699 and 22631.5699
- Applies To: Windows 11 version 23H2, all editions
Major Notices
- Windows Secure Boot Certificate Expiration
- Secure Boot certificates for most Windows devices will start expiring from June 2026.
- Action required: Update the Secure Boot certificates before expiration to avoid boot issues. Details and preparation guidance are available here.
- End of Servicing Notice
- Windows 11 version 22H2 (Enterprise and Education editions) will not receive non-security preview updates after June 26, 2025. Regular security updates continue until October 14, 2025.
- After that, the version reaches end of servicing—no further updates.
Highlights of the Update
- Addresses several non-security issues for Windows 11.
Improvements and Fixes
Windows 11, version 23H2- Country and Operator Settings Asset (COSA): Updated profiles for certain mobile operators.
- File systems (ReFS):
- Fixed rare system memory exhaustion caused by backup apps on large files.
- Fixed PDF file search errors in shared folders that caused problems with virtual PDF printers and backups.
- Input (Known Issue):
- Fixed Microsoft Changjie IME (Traditional Chinese) issues post-KB5062552.
- Fixed Hindi and Marathi Phonetic Input keyboard issues post-KB5062552.
- Networking: Fixed slow peripheral response after hibernation when a device has an active cellular connection.
- Printer: Printer names are clearer when using IPP Directed Discovery.
- Stability Issue: Fixed rare device unresponsiveness or instability after installing May 2025 security and later updates.
- Taskbar: Fixed missing accessibility feature icons on the taskbar.
- Quality improvements for the Windows servicing stack to ensure reliability in updates.
Known Issues
- None: Microsoft is not currently aware of any issues with this update.
Getting the Update
- Windows Update / Microsoft Update: Installs automatically.
- Windows Update for Business: Installs automatically according to configured policies.
- Microsoft Update Catalog: Direct link to download KB5062663
- WSUS: Syncs automatically (Product: Windows 11; Classification: Security Updates).
Removal Information
- To remove the LCU after installing the combined SSU and LCU package, use the DISM command. You cannot remove the SSU via Windows Update Standalone Installer or after installation.
References
If you need information about new file versions or download links for specific files included in this update, please let me know!Source: Microsoft Support July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview - Microsoft Support
