The Windows 11 preview update KB5077239 is being rolled out gradually to 26H1 PCs, featuring enhancements to Copilot, updated aesthetics in File Explorer, camera improvements, and accessibility tweaks. Key improvements include language support for the Copilot experience and a more cohesive dark mode for File Explorer, alongside better camera functionality through Windows Studio Effects. The update also addresses issues like lock screen freezing, Explorer.exe stalling, and a memory leak in the slideshow lock screen, while enhancing BitLocker recovery and Windows Sandbox stability. Users can expect to receive these updates soon, with the full rollout planned for later this month

Windows 11 KB5077239 Preview: What's New and Improved in this 26H1 Update

The latest Windows 11 preview update, KB5077239, is now rolling out to Windows 11 26H1 PCs under a phased schedule and will be available on all devices later this month. This package includes several improvements such as enhanced Copilot features, updated File Explorer aesthetics, camera enhancements, and accessibility tweaks. The update also addresses various issues like the lock screen freezing when switching backgrounds and Explorer.exe stalling due to misbehaving startup apps. Additionally, it patches a memory leak in the slideshow lock screen, improves BitLocker recovery, and enhances Windows Sandbox stability.

Windows 11 KB5077239 Preview: What's New and Improved in this 26H1 Update @ NT Compatible