The most recent update for Windows 11 24H2, identified as KB5050009, has caused various kinds of technical issues for users, affecting critical functionalities like audio, Bluetooth, USB devices, and webcams.
Released earlier this month, the update was intended to enhance system stability and introduce new features but has instead left many users grappling with broken devices and disrupted workflows.
Audio and Bluetooth Failures
The Windows Latest report states that Bluetooth audio devices are among the most often reported issues. Although their Bluetooth headphones connect correctly, users have reported that no audio is sent.
This problem extends to video playback on platforms like YouTube, which either buffers indefinitely or fails with an “audio render error.” Attempts to resolve the issue by unpairing and repairing devices or resetting Bluetooth settings have proven ineffective.
The root cause appears to be a flaw in how Windows 11 KB5050009 manages Bluetooth audio drivers.
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A temporary fix involves uninstalling the update via Settings > Windows Update > Update history. However, this is far from ideal as it rolls back other improvements delivered by the patch.
USB DAC and Headphone Incompatibility
Another significant problem is the failure of USB Digital-to-Analog Converters (DACs) and USB-connected headphones.
Devices such as the JDS Labs ODAC, Fiio E17K USB DAC, and HyperX USB headsets are reportedly non-functional after installing KB5050009.
Users encounter errors like “Insufficient system resources exist to complete the API” when attempting to use these devices.
This issue also impacts users running Windows 11 23H2 with update KB5050021 and even some Windows 10 systems. Uninstalling the problematic updates temporarily restores functionality but leaves systems vulnerable to security risks.
Webcam Malfunctions
Web cameras, including built-in models on laptops and external devices like Dell’s P3424WEB monitor webcams, are also affected. Users report errors such as “Device cannot start” or “Camera not detected.”
In some cases, even uninstalling the update does not resolve the issue, requiring a full system reinstall.
Gaming and System Stability Issues
Gamers have reported that KB5050009 causes frequent crashes when using Alt+Tab to switch between applications during gameplay.
Titles like Fortnite and Assassin’s Creed are particularly affected, with crashes sometimes locking up the entire system interface. Additionally, Task Manager and Ctrl+Alt+Del fail to respond in these scenarios.
Installation Errors
Some users have experienced difficulties installing KB5050009 altogether. Common issues include endless restart loops or error code 0x80070005 during installation attempts.
Others find that Smart App Control begins erroneously blocking legitimate applications post-update.
Microsoft has yet to issue an official fix for these widespread problems. However, a preview update released on January 28 (KB5050094) reportedly resolves some of the USB DAC issues.
Users eager for a resolution can install this optional update but should proceed with caution as it may introduce new bugs.
Workarounds
For those affected by these issues, here are some suggested workarounds:
- Uninstall Problematic Updates: Navigate to Settings > Windows Update > Update history and remove KB5050009 or KB5050021.
- Pause Updates: Temporarily pause automatic updates until Microsoft releases a stable patch.
- Manually Reinstall Drivers: For USB DACs or webcams, reinstall drivers via Device Manager.
- Registry Tweaks: Advanced users can modify registry entries like “EnhancedPowerManagementEnabled” for USB devices to restore functionality.
Numerous technical issues with the KB5050009 update for Windows 11 24H2 have affected essential features like webcams, USB devices, and audio.
Therefore, it is recommended that users affected report issues through the Feedback Hub and be cautious when it comes to future upgrades.
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