Windows 11 KB5062663 Update (OS Build 22621.5699): Key Highlights & Fixes

Here is a summary of the July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview update for Windows 11 version 23H2:

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Key Highlights​

1. Secure Boot Certificate Expiration Notice

• Secure Boot certificates used by most Windows devices are set to expire starting June 2026. If not updated, some devices might fail to boot securely after that date. More info and preparation steps.

2. End of Servicing Reminder

• Windows 11 version 22H2 (Enterprise and Education) will stop receiving non-security preview updates after June 26, 2025. Security updates will end October 14, 2025. Upgrade is recommended.

3. Windows Backup for Organizations

• Public preview available for seamless device migration to Windows 11, especially for new or reimaged Microsoft Entra joined devices.

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Improvements and Fixes​

General

• This update is a non-security preview, focusing on quality improvements and bug fixes.

Key Fixes:

• Country and Operator Settings (COSA): Profile updates for certain mobile operators.
• File Systems (ReFS):
• Fixes memory exhaustion from backup applications on large files.
• Fixes errors when searching for PDF files in a shared folder causing virtual PDF printer/backup issues.
• Input (Known Issue Fixed):
• Fixes issues with Microsoft Changjie IME (Traditional Chinese) introduced in the July 8, 2025 update.
• Fixes problems with Phonetic Input methods for Hindi and Marathi after previous update.
• Networking: Faster peripheral readiness after resuming from hibernation with active cellular connections.
• Printer: Clearer printer names with IPP Directed Discovery.
• Stability: Fixes rare cases of devices not responding after certain May and later 2025 updates.
• Taskbar: Fix for missing accessibility icons on the taskbar.

Servicing Stack Update (KB5062686) – 22621.5690 and 22631.5690

• Improves the Windows update servicing stack reliability.

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Known Issues​

• Microsoft is not currently aware of any issues with this update.

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How to Get this Update​

• Windows Update/Microsoft Update: Installs automatically.
• Windows Update for Business: Installs according to policy.
• Microsoft Update Catalog: Standalone package available.
• WSUS: Available when configured for Windows 11/Security Updates.

SSU and LCU: This update combines the latest Servicing Stack Update (SSU) with the Latest Cumulative Update (LCU). You cannot uninstall SSU once installed.

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For more details, including update history, types of Windows updates, and file list downloads, see the official Microsoft KB page:
July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview

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Source: Microsoft Support July 22, 2025—KB5062663 (OS Builds 22621.5699) Preview - Microsoft Support