Windows 11 Dev Channel KB5074157 Update Fixes Start Menu, Taskbar & Bluetooth Issues

Microsoft has released Windows 11 Insider Preview Build 26220.7653, identified by the update code KB5074157, to users enrolled in the Dev Channel. This update mirrors the build previously distributed to the Beta Channel, focusing on enhancing the stability and usability of core Windows 11 components. The primary objectives of this release are to address persistent issues within the Start Menu and Taskbar, improve Bluetooth device reporting, and generally bolster system reliability. This build is a part of the ongoing stabilization efforts for Windows 11 version 25H2, ensuring a more polished experience for testers as development progresses towards future updates.

This particular update, KB5074157, is not a feature-heavy release but rather a refinement build. Its significance lies in its comprehensive approach to fixing common user-facing problems that have been impacting daily productivity and system interaction for some users. By targeting these specific areas, Microsoft aims to provide a smoother and more dependable Windows experience for those on the cutting edge of development within the Insider Program.

Start Menu and Taskbar Stability Improvements

Users experiencing erratic behavior with the Start Menu and Taskbar will find significant relief with KB5074157. The update tackles several long-standing usability issues that have hampered navigation and interaction for some users. These fixes are designed to restore expected functionality and reduce instances of unexpected behavior.

One notable fix prevents the auto-hidden taskbar from appearing prematurely. This issue could previously cause the taskbar to block interaction at the bottom of the screen, leading to frustration and workflow interruptions. The update ensures the taskbar behaves as intended, only appearing when expected.

Furthermore, a critical bug where the Start Menu, Notification Center, and Quick Settings failed to respond to mouse clicks has been resolved. While keyboard shortcuts continued to function, the inability to use the mouse for these essential interface elements was a significant usability barrier. This patch restores full mouse functionality for these key Windows components.

A memory leak within the Start Menu, which could lead to gradual performance degradation over time, has also been addressed. This fix is crucial for maintaining system responsiveness, especially on systems that are used for extended periods. By eliminating this leak, the Start Menu should perform more consistently and efficiently.

For users in regions with right-to-left languages, such as Arabic and Hebrew, a fix is included for an issue where the Start Menu would open on the incorrect side of the screen when taskbar icons were not centered. This ensures a more linguistically appropriate and intuitive user experience. Additionally, touch users will appreciate the ability to swipe within pinned app folders without inadvertently dismissing the Start Menu, further enhancing touch-based navigation.

Bluetooth and Settings Connectivity Enhancements

Beyond the core interface elements, KB5074157 also brings improvements to hardware connectivity and system settings. These updates focus on ensuring that devices and configurations are reported and managed correctly within Windows 11.

A common point of feedback has been the inaccurate reporting of battery levels for Bluetooth devices. This update rectifies that, ensuring that supported Bluetooth hardware now correctly displays its battery status within Windows. This provides users with better awareness of their peripheral device power levels.

The stability of the Settings app has also been improved, with a specific fix for crashes that occurred when users interacted with audio devices. This ensures a more reliable experience when managing sound hardware through the Settings interface. The keyboard character repeat delay setting has also been corrected, as it was previously behaving in reverse, leading to unexpected typing behavior.

The login screen has seen a visual improvement as well, with a fix for a blank password icon. This enhances visibility and accessibility for users logging into their systems. These targeted fixes contribute to a more robust and user-friendly interaction with both hardware and system configurations.

System Reliability and User Experience Polish

This update also includes broader system reliability enhancements and subtle user experience improvements. These changes, while not always immediately apparent, contribute to the overall stability and polish of the Windows 11 operating system.

The build addresses issues that could cause explorer.exe to hang during startup, particularly when certain applications were configured to launch at login. This prevents the taskbar from failing to appear, ensuring a smoother boot process. Furthermore, a fix for .appinstaller files ensures that MSIX packages install correctly without encountering invalid argument errors.

Even minor application behaviors have been refined. For instance, a bug in Notepad that prevented underscores from displaying correctly at 125% scaling with specific fonts has been resolved. These granular fixes demonstrate a commitment to improving the user experience across various applications and system functions.

Known Issues and Channel Considerations

As with all Insider builds, KB5074157 comes with a set of known issues that Microsoft is actively tracking. These are important for users to be aware of, as they represent areas where further refinement is needed.

One such issue pertains to the Xbox Full-Screen Experience (FSE). Certain applications may exhibit unexpected behavior within FSE, especially those that rely on fixed window sizes or launch additional windows. This is an area of ongoing investigation to ensure compatibility and performance for gamers and application developers.

A system tray issue has also been noted, where some applications may not appear in the system tray when they are expected to. This can lead to confusion regarding background application status. Additionally, a display bug may cause secondary monitors to show black screens for a small number of users, a problem Microsoft plans to address in a future update.

For users of the “Click to Do” feature, Copilot prompt suggestions may fail to open if the Microsoft 365 Copilot app is not running. This is a specific scenario that impacts the integration of Copilot within certain workflows. Microsoft continues to monitor these issues and gather feedback to prioritize future fixes and improvements.

Dev Channel Specifics and Channel Switching

It is important to note that KB5074157 was released to the Dev Channel after its initial rollout to the Beta Channel. This timing is a result of Microsoft’s strategy of occasionally shipping identical builds to both channels, often using enablement packages or matched cumulative updates.

This practice has operational consequences for Insiders. There is a limited window during which users can switch from the Dev Channel to the Beta Channel without requiring a full Windows reinstallation. Once the Dev Channel advances to a higher build number than the Beta Channel, this transition becomes more complex.

Microsoft advises users who prefer a more stable testing environment to consider switching to the Beta Channel while this option is readily available. The Dev Channel remains the place for the earliest exposure to experimental features, but it inherently carries a higher risk of instability compared to the Beta Channel.

How to Install KB5074157

For Windows Insiders enrolled in the Dev Channel, installing KB5074157 is a straightforward process through Windows Update. Users should navigate to Settings, then Windows Update, and ensure they are enrolled in the Dev Channel.

It is recommended to enable the “Get the latest updates as soon as they’re available” toggle for faster access to new builds and fixes. After confirming enrollment and settings, clicking “Check for updates” will initiate the download and installation of KB5074157 (Build 26220.7653).

For those who prefer an offline installation, community resources may offer enablement packages or ISOs. However, users should exercise caution and rely on trusted sources for such downloads, as they are not officially supported by Microsoft. The standard Windows Update method remains the most reliable and secure way to acquire this Insider Preview build.