Microsoft has released the KB5070311 preview cumulative update for Windows 11, which includes 49 enhancements aimed at improving user experience. This optional update allows IT administrators to preview upcoming bug fixes and features before the official Patch Tuesday rollout. The update addresses several known issues, including unresponsive explorer.exe and taskbar processes, search problems in File Explorer related to SMB shares, and instability in the Local Security Authority Subsystem Service (LSASS).
To install KB5070311, users can go to Settings, select Windows Update, and click 'Check for Updates'. Users must confirm their intention to install it by selecting 'Download and install', or they can manually download it from the Microsoft Update Catalog. The update elevates Windows 11 25H2 and 24H2 devices to builds 26200.7309 and 26100.7309, respectively.
Notable enhancements include a broader search results menu, the ability to use Windows Studio Effects with additional cameras, new context menu options for Windows Spotlight backgrounds, and improvements to File Explorer's dark mode experience. Microsoft has announced there will be no preview update in December, with regular updates resuming in January. They are also working on a solution for a known issue where the password sign-in option has disappeared from the lock screen options.