KB5062663 Preview Update for Windows 11 Version 23H2 (OS Build 22631.5699)
Optional preview update released July 22, 2025 for Windows 11 version 23H2, delivering non-security quality fixes including file system, input, networking, printer, and stability improvements.
Summary
This is an optional, non-security preview update for Windows 11 version 23H2, released on July 22, 2025, bringing the OS to build 22631.5699. It addresses quality issues across file systems, input methods, networking, printing, and system stability. It does not include security fixes. Full details are on Microsoft Support.
Highlights
- This update addresses non-security issues for the Windows operating system.
Improvements and fixes
- Country and Operator Settings Asset (COSA): Mobile operator profiles for certain carriers have been brought up to date.
- File systems - ReFS memory exhaustion: Resolved a problem in the Resilient File System (ReFS) where backup applications working against large files could occasionally cause system memory to become fully exhausted.
- File systems - PDF search errors in shared folders: Fixed incorrect error messages such as "No More Files" or "STATUS_NO_MORE_FILES" that appeared when searching for PDF files in a shared folder, which were also disrupting output to virtual PDF printers and interfering with backup processes.
- Input - Microsoft Changjie IME: Corrected a problem introduced by KB5062552 in which the Microsoft Changjie IME for Traditional Chinese could cause failures such as inability to form or select words, an unresponsive spacebar or blank key, incorrect word output, or a broken candidate window display.
- Input - Phonetic input methods: Fixed an issue, also triggered by KB5062552, where Phonetic input methods including the Hindi Phonetic Input keyboard and the Marathi Phonetic keyboard might not work correctly.
- Networking - Hibernation resume delay: Addressed a problem on some devices with active cellular connections where peripheral devices took longer than expected to become functional after the system resumed from hibernation.
- Printer - IPP Directed Discovery names: Printer names now display more clearly when IPP Directed Discovery is used, making it easier to identify the correct printer during setup.
- Stability issue: Fixed a rare condition introduced by the May 2025 security update and subsequent updates that caused devices to become unresponsive and stop responding in specific scenarios.
- Taskbar - Accessibility feature icons: Resolved an issue where taskbar icons for accessibility features were not appearing.
- Servicing stack update (KB5062686): A servicing stack update for builds 22621.5690 and 22631.5690 is included, improving the reliability of the component responsible for installing Windows updates.
Known issues
Microsoft lists no known issues for this update at the time of writing.
How to get this update
Microsoft combines the latest servicing stack update (SSU) with the latest cumulative update (LCU) in a single package, so no separate SSU installation is required beforehand.
- Windows Update: Go to Settings > Update & Security > Windows Update. The update appears in the Optional updates available area. Select it and choose to download and install.
- Windows Update for Business: These changes will be included in the next security update delivered through Windows Update for Business.
- Microsoft Update Catalog: Download the standalone package directly from the Microsoft Update Catalog.
- Windows Server Update Services (WSUS): Manually import the update into WSUS using the Microsoft Update Catalog.
To remove only the LCU after installing the combined SSU and LCU package, use the DISM /online /remove-package command with the LCU package name as the argument. Running wusa.exe with the /uninstall switch will not work on the combined package. The SSU cannot be removed from the system once installed.
Frequently asked questions
Is this update required for security compliance?
No. KB5062663 is a non-security optional preview update. It does not carry security fixes and is not required for compliance with monthly security patching. Security-focused organizations can wait for the fixes included here to be rolled into the next monthly cumulative security update.
Do I need to install a separate servicing stack update before applying this?
No separate prerequisite step is needed. Microsoft bundles the servicing stack update (KB5062686, versions 22621.5690 and 22631.5690) together with the cumulative update in a single package, so both components install at the same time.
Which devices should prioritize this update?
Organizations running devices that experienced stability issues after the May 2025 security update, or that rely on Traditional Chinese Changjie IME, Hindi or Marathi Phonetic keyboards, ReFS volumes with large-file backups, or cellular-connected hardware may want to test and deploy this update promptly given the targeted fixes it contains.
What is the Secure Boot certificate situation mentioned in the update notes?
Microsoft notes that Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Newer certificates have been rolling out to consumer and non-managed business devices for several months. Devices that have not yet received the updated certificates will continue to start and operate normally, and standard Windows updates will continue to install while the rollout proceeds.
