Microsoft has begun public testing of new Bluetooth audio sharing capabilities within its Windows 11 operating system. The feature was introduced in the Windows 11 Insider Preview Build 26236, which is available to testers in the Canary Channel. This update allows a PC to function as a public broadcast source, enabling users to share audio with multiple nearby Bluetooth devices simultaneously, a significant update to the platform’s wireless audio functionality.

Understanding LE Audio and Auracast

The foundation of this new feature is Bluetooth Low Energy (LE) Audio. This standard not only offers high-fidelity audio streaming but is also designed for greater power efficiency, which can extend the battery life of connected wireless devices. A key component of LE Audio is the Auracast broadcast audio feature. Auracast transforms a source device, like a Windows 11 PC, into a radio-like broadcaster. It can transmit its audio stream to an unlimited number of compatible Bluetooth audio receivers within its range. This is useful in public spaces like airports or gyms, or for sharing audio from a laptop with multiple people using their own headphones. Windows Insiders can find, join, and listen to Auracast broadcasts via the Quick Settings sound flyout.

Current Hardware and System Requirements

Microsoft has confirmed that this advanced Bluetooth audio support is not universally available. The feature is currently limited to a specific category of devices known as AI PCs. To use the feature, a system must be powered by an Intel Core Ultra processor. In addition to the specific CPU, the device also requires updated firmware from the manufacturer that explicitly enables the LE Audio capabilities. Microsoft has identified its Surface Laptop 6 and Surface Pro 10 as being among the first compatible devices. Other original equipment manufacturers, such as HP and Lenovo, are also shipping systems that meet these hardware and firmware prerequisites.