Microsoft has released an out-of-band update, KB5064489, for Windows 11 version 24H2, elevating the OS build to 26100.4656. This unscheduled update addresses critical issues that emerged following the July 8, 2025, cumulative update (KB5062553).
Key Improvements and Fixes:
- Resolution of Start Menu and Taskbar Malfunctions: Users reported unresponsive Start Menus and Taskbars post-installation of KB5062553. This update rectifies these issues, restoring full functionality.
- Fix for System Restore Failures: Some systems experienced failures during the System Restore process after the previous update. KB5064489 addresses and resolves these failures.
- Enhanced Compatibility with Third-Party Applications: The update improves compatibility with various third-party applications that were experiencing crashes or performance issues due to the prior update.
This out-of-band update is available through Windows Update and the Microsoft Update Catalog. While it is optional, users experiencing the aforementioned issues are strongly encouraged to install it promptly to restore system stability.
Understanding Out-of-Band Updates:
Out-of-band (OOB) updates are released outside the regular Patch Tuesday schedule to address urgent issues that cannot wait for the next scheduled update. They are typically deployed to resolve critical vulnerabilities or significant bugs that impact system functionality. For instance, in June 2025, Microsoft released KB5063060 to fix an incompatibility issue with the Easy Anti-Cheat service, which was causing unexpected system restarts when launching certain games.
Implications for Users:
The release of KB5064489 underscores Microsoft's commitment to maintaining system stability and addressing user-reported issues promptly. Users are advised to monitor their systems for any irregularities following updates and to install out-of-band updates when necessary to ensure optimal performance and security.
Conclusion:
The KB5064489 update is a critical release aimed at resolving significant issues introduced by the previous cumulative update. Users experiencing Start Menu or Taskbar unresponsiveness, System Restore failures, or application compatibility problems should install this update without delay to restore their systems to full functionality.
Source: Microsoft Support July 13, 2025—KB5064489 (OS Build 26100.4656) Out-of-band - Microsoft Support
Attachments
Last edited:
