Microsoft released KB5077241, an optional February 2026 preview update for Windows 11 that delivers 29 non‑security quality improvements including BitLocker reliability fixes, a built‑in network speed test, and native Sysmon functionality. The update also adds usability and management features such as Shift/middle‑click File Explorer instances, RSAT on Arm64, and automatic Quick Machine Recovery for certain Windows 11 Pro devices, and can be installed via Windows Update or the Microsoft Update Catalog. #KB5077241 #Sysmon
Keypoints
- KB5077241 is an optional non‑security preview update for Windows 11 that includes 29 quality improvements.
- The update fixes BitLocker reliability issues that could cause devices to freeze after entering the recovery key.
- A built‑in network speed test for Ethernet, Wi‑Fi, and cellular connections is now available from the taskbar.
- Native Sysmon functionality is added (disabled by default) and Quick Machine Recovery is automatically enabled on certain Windows 11 Pro devices.
- Admins can install the preview via Settings > Windows Update > Check for updates > Download and install, or manually from the Microsoft Update Catalog.