Windows 11 KB5077241 Update Enhances BitLocker Security and Includes Sysmon Tool

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Microsoft Releases New Optional Cumulative Update for Windows 11

Microsoft has released a new optional cumulative update for Windows 11, KB5077241, which brings 29 improvements to the operating system.

Key Improvements in KB5077241

One of the key improvements in KB5077241 is the enhancement of BitLocker reliability, which prevents devices from freezing after entering the recovery key.

Additionally, a built-in network speed test for Ethernet, Wi-Fi, and cellular connections has been added to the Windows taskbar.

This feature can be accessed from the Wi-Fi or Cellular Quick Settings or by right-clicking the network icon in the system tray.

Other Notable Improvements

The update also introduces an option to open a new File Explorer instance by holding down the Shift key or the middle mouse button.

Furthermore, the reliability of PCs waking from sleep has been improved, and the time it takes for a PC to resume from sleep has been reduced, especially under heavy load.

Native System Monitor (Sysmon) functionality has been added to the operating system, although it is disabled by default.

Quick Machine Recovery (QMR) is also automatically enabled on Windows Professional devices that are not domain-joined and not enrolled in enterprise endpoint management.

Installing KB5077241

To install KB5077241, users can open Windows Settings, click on Windows Update, and then click on ‘Check for Updates.’

Once installed, the update will upgrade Windows 11 25H2 and 24H2 devices to builds 26200.7922 and 26100.7922, respectively.

Additional Updates

Other notable improvements in the February 2026 preview update include the ability to set WebP (.webp) images as the desktop background, support for Remote Server Administration Tools (RSAT) on Windows 11 Arm64 devices, and improved responsiveness of the Windows Update settings page.

Microsoft has also announced that a redesigned Start menu, introduced in the October 2025 non-security update (KB5067036), is gradually rolling out to Windows devices.

Updated battery icons are also being pushed to more Windows devices to make it easier to see the current battery status at a glance.

Furthermore, Microsoft is rolling out updated Secure Boot certificates to replace the original 2011 certificates that will expire in late June 2026.

This move follows a November alert that warned administrators to update the security certificates before they expire.