Introduction

Microsoft has released Windows 11 Insider Preview Build 26120.1912 (KB5043168) to the Dev Channel, introducing significant enhancements, notably the support for 6GHz Wi-Fi tethering. This update aims to improve connectivity and overall system performance for users with compatible hardware.

6GHz Wi-Fi Tethering Support

The standout feature of this build is the enhancement of the Windows Mobile Hotspot to support 6GHz connections. This advancement allows users to share their internet connection over the 6GHz band, offering higher data transfer rates and reduced latency compared to the traditional 2.4GHz and 5GHz bands. To utilize this feature, devices must have compatible hardware and updated drivers. Users can enable the 6GHz band by navigating to Settings > Network & Internet > Mobile Hotspot and editing the hotspot properties. For compatibility with existing devices, the mobile hotspot will only use 6GHz when explicitly enabled. (blogs.windows.com)

Additional Improvements and Fixes

Beyond the 6GHz support, Build 26120.1912 includes several other enhancements:

  • General Improvements: A series of minor updates aimed at refining the overall user experience and system stability.
  • Task Manager Fixes:
    • Resolved an issue where the Settings page displayed a white background incorrectly.
    • Fixed a problem causing Task Manager to become unresponsive when switching from a high contrast theme to a normal theme.
  • Input Method Editor (IME): Addressed a memory leak that occurred when closing a window with input focus on a combo box.
  • WebView2 Applications: Corrected an issue where these apps did not detect input from Xbox 360 and Bluetooth controllers. (blogs.windows.com)

Known Issues

Users should be aware of a known issue in this build:

  • Start Menu: Clicking or tapping on a letter in the Start menu’s All Apps list may cause the list to break. If this occurs, rebooting the system or restarting explorer.exe is recommended as a workaround. (blogs.windows.com)

Implications and Impact

The introduction of 6GHz Wi-Fi tethering aligns with the growing adoption of Wi-Fi 6E technology, which utilizes the 6GHz band to provide faster and more reliable wireless connections. This enhancement is particularly beneficial for environments with multiple connected devices, as it reduces congestion and improves overall network performance. Users with compatible hardware can expect a more seamless and efficient internet sharing experience.

Technical Details

To enable the 6GHz mobile hotspot feature, users must ensure their devices have Wi-Fi 6E-compatible network cards and the latest drivers installed. Not all chips that support 6GHz Wi-Fi will support the 6GHz mobile hotspot. The feature can be activated by:

  1. Navigating to Settings > Network & Internet > Mobile Hotspot.
  2. Editing the hotspot properties.
  3. Selecting the 6GHz band from the available options.

For users who do not see the 6GHz option, it may be necessary to update network drivers or verify hardware compatibility. (blogs.windows.com)

Conclusion

Windows 11 Dev Build 26120.1912 marks a significant step forward in enhancing wireless connectivity through the support of 6GHz Wi-Fi tethering. Alongside various system improvements and fixes, this update demonstrates Microsoft's commitment to leveraging emerging technologies to improve user experience. Users are encouraged to explore these new features and provide feedback to aid in the refinement of future releases.

Note: This build is currently available to Windows Insiders in the Dev Channel. Users should be aware of potential issues and provide feedback through the appropriate channels.