Microsoft has begun rolling out Shared Audio support to Windows 11 Copilot+ PCs through the May 2026 KB5089573 preview update. The feature leverages Bluetooth LE Audio to let two sets of compatible headphones or earbuds play the same audio stream from a single PC simultaneously. It is the first time Windows has natively supported dual-listening without third-party software or hardware splitters, and it marks a notable step forward for accessibility and shared media experiences.

What Is Shared Audio – and How LE Audio Makes It Possible

Shared Audio is Microsoft’s name for the ability to send one audio stream to two different Bluetooth playback devices at once. Unlike traditional Bluetooth Classic, which typically forces a single audio sink, Bluetooth LE Audio introduces a new architecture based on the LC3 codec and Isochronous Channels. Among its promises: lower latency, better power efficiency, and native support for multiple independent streams.

The core enabler is the Bluetooth LE Audio broadcast and unicast framework. Windows 11’s implementation appears to use a unicast approach, meaning the PC maintains two separate but synchronized LE Audio connections. Both headphones receive the same PCM stream, time-aligned by the OS. Microsoft first hinted at this capability in 2024 developer sessions but had not shipped a consumer-ready version until now.

LC3’s efficiency also means users can enjoy higher audio quality at lower bitrates compared to the aging SBC codec that dominates Classic Bluetooth. For a dual-listening scenario, this is critical: running two streams with SBC would strain bandwidth and battery, bluetooth LE Audio’s leaner profile makes it practical on battery-powered Copilot+ PCs.

How Shared Audio Works on Windows 11

After installing KB5089573, the feature appears as a new section under Settings → Bluetooth & devices → Devices. When two compatible LE Audio headphones are paired, a “Shared Audio” toggle becomes available. Tapping it links both devices to the same internal audio output endpoint, which Windows treats as a single virtual audio device.

The user experience is straightforward:

  • Connect the first LE Audio headphone or earbuds normally via the Bluetooth quick settings or Settings app.
  • Pair and connect a second LE Audio device.
  • Open the Shared Audio panel and check the box next to both devices.
  • All system audio – music, video calls, game sounds, accessibility audio prompts – routes to both simultaneously.

Individual volume controls for each device are available, and the OS remembers the pairing for future sessions. Microsoft also added an indicator in the system tray that displays two small headphone icons when Shared Audio is active.

Background execution is efficient. The implementation uses the modern Windows Audio Endpoint Builder service alongside the Bluetooth LE stack introduced in Windows 11 24H2. Early testers report that CPU overhead is negligible, often under 1% on Snapdragon X Elite and Intel Lunar Lake Copilot+ devices.

System Requirements: Copilot+ and the Right Hardware

Shared Audio is not available on all Windows 11 machines. Microsoft tied the feature to Copilot+ PCs. That means only devices with the official Copilot+ hardware specification – at least 40 TOPS NPU, 16 GB of RAM, and a compatible SoC – qualify. The company says the NPU helps manage LE Audio synchronization without burdening the CPU, but the exact offload mechanism hasn’t been detailed publicly.

The Bluetooth radio must support LE Audio and specifically the Connected Isochronous Stream (CIS) profile. Many recent Wi-Fi / Bluetooth combo modules meet this requirement, including:

  • Qualcomm FastConnect 7800
  • Intel BE200 and BE202
  • MediaTek MT7925
  • Some newer Realtek RTL8852-series adapters

Users also need headphones that explicitly support Bluetooth LE Audio and the relevant audio service – at minimum the Common Audio Profile (CAP) and Telephony and Media Audio Profile (TMAP). As of mid-2026, dozens of models from Sony, Samsung, JBL, Bose, Apple (with AirPods Pro 3rd generation), and others claim compatibility. Microsoft maintains an official list, updated weekly, in the Windows Hardware Compatibility Program catalog.

All Copilot+ PCs that enter the market after June 2026 will ship with Shared Audio enabled out of the box, assuming the Bluetooth firmware supports it. For existing Copilot+ devices, the KB5089573 preview installs the feature as an optional update but moves to mandatory with the June security patch cycle.

How to Get KB5089573 and Enable Shared Audio

The update is currently in Optional Quality Update channel for Windows 11 version 24H2, Build 26100.xxxx (the specific build number varies by ring). To install:

  1. Open Settings → Windows Update.
  2. Click “Check for updates.”
  3. After the check completes, look for “2025–06 Cumulative Update Preview for Windows 11 Version 24H2 (KB5089573).” Click “Download & install.”
  4. Restart the PC when prompted.

After reboot, the Shared Audio UI appears automatically if two LE Audio headphones are already paired. If not, pair the headphones first; the settings entry remains hidden until compatible devices are detected.

Enterprise users can manage the feature through Group Policy or Intune by toggling the new “Allow Bluetooth LE Audio Shared Listening” policy under Administrative Templates → Windows Components → Bluetooth. This gives IT admin control over potential audio privacy and disruption concerns in open-office environments.

Community Reaction and Real-World Testing

Early feedback from Windows Insider members and tech forums has been cautiously optimistic. The most consistent praise centers on simplicity: the setup is described as “Apple-like” in its seamlessness. Users especially appreciate independent volume controls and the ability to mix different headphone models.

Audio sync is generally tight, with measured latency below 30 ms on typical setups when both headsets support the CIS transport. But the preview has also surfaced a few rough edges:

  • Some budget LE Audio earbuds experience occasional desynchronization when the PC’s Wi-Fi is under heavy load, likely due to antenna sharing.
  • A minority of users report that the second headphone does not appear in the Shared Audio panel until both are power-cycled after pairing.
  • Windows Sonic for Headphones spatial audio currently disables Shared Audio; Microsoft warns that spatial sound and Shared Audio are mutually exclusive in the initial release.

Microsoft’s official Feedback Hub contains several tickets, and company moderators have acknowledged a hotfix planned for late June 2026 to address the Wi-Fi interference problem. Overall satisfaction ratings on insider surveys hover around 78% positive, indicating a strong but not flawless debut.

Performance, Audio Quality, and Battery Impact

Because Shared Audio uses LE Audio’s LC3 codec, audio quality is noticeably better than classic SBC, particularly in the high-frequency range. Testing with reference FLAC files showed no audible compression artifacts at 256 kbps. Windows 11 dynamically adjusts bitrate based on signal strength, similar to Apple’s approach with AirPods, so quality may flex in noisy RF environments.

Battery life on the PC side is minimally affected. In a controlled loop of a 1080p video with both headphones connected, a Surface Pro 10 Copilot+ used about 4% more battery per hour compared to single-headphone playback. That extra drain is mostly from the radio chip rather than the CPU or NPU.

On the headphone side, manufacturers report roughly 15–20% higher power consumption when acting as one of two synchronized sinks. This is within expected ranges for LE Audio and not likely to be a dealbreaker for most users, but those using ultra-compact true wireless earbuds with tiny batteries might notice shorter runtimes.

Limitations and Known Issues

As of the May 2026 preview, the feature has a defined set of constraints:

  • Only two simultaneous headphones. No multi-room setup: Shared Audio is strictly dual-device. Microsoft hints that a broadcast audio mode that would support unlimited sinks is under investigation but not confirmed.
  • PC-only broadcast. The phone Link companion app does not yet proxy phone calls or media through Shared Audio. You can share PC audio, but not audio from a connected smartphone.
  • No mic sharing. Microphone input is routed from only one headset at a time (the primary device). The second headphone’s mic is disabled during Shared Audio sessions to avoid echo cancellation complexities.
  • Windows 11 version lock. KB5089573 is exclusive to 24H2 and later. Windows 10 and even Windows 11 23H2 are excluded, a decision Microsoft attributes to the updated Bluetooth stack in 24H2.
  • Hardware DRM. Some DRM-protected content from Netflix and other streaming apps may play only on one headset if the app uses hardware-enforced path. Microsoft is working with content providers to update their Windows apps.

A public-facing roadmap item suggests that microphone sharing for conferencing apps could arrive in late 2026, subject to Insider testing.

The Bigger Picture: Accessibility, Shared Experiences, and Windows 11’s Evolution

Shared Audio is more than a convenience feature. Assistive technology advocates have long called for native dual-listening to support users with hearing aids or cochlear implants that stream audio over Bluetooth. Many assistive devices already support LE Audio, so this update directly benefits people who rely on streaming to hearing aids while a caregiver or interpreter listens alongside.

For education, two students can watch an instructional video on one laptop without disturbing others. In presentation settings, a presenter can hand one earbud to a sign-language interpreter while keeping the other. On flights, couples can watch the same movie without splitters. The use cases are broad.

This release also signals Microsoft’s deepening investment in Copilot+ as a premium Windows tier with exclusive features. Shared Audio joins AI-driven enhancements like Recall, Cocreator, and Live Captions as capabilities that differentiate the platform. While some critics argue that Bluetooth LE Audio doesn’t require an NPU, Microsoft’s positioning is strategic—tying desirable hardware features to the Copilot+ brand strengthens its value proposition.

What’s Next for Bluetooth LE Audio on Windows

Microsoft has published a public feedback roadmap for Bluetooth LE Audio through the Windows Insider Program. Key items on the near-term horizon:

  • Third-Quarter 2026: Expected hotfix for Wi-Fi coexistence issues, expanded support for additional headphone models.
  • Fourth-Quarter 2026: Microphone sharing for one primary + one secondary device; low-latency game mode for LE Audio (targeting <20 ms).
  • First-Half 2027: Broadcast audio sink support, allowing any number of LE Audio devices to listen to a single PC stream without pairing.

The LE Audio stack is also being prepared for broader third-party API access, which would let app developers create specialized multi-listener experiences, such as language translation apps that send different audio channels to each listener.

Conclusion

With KB5089573, Windows 11 becomes the first major desktop operating system to natively support simultaneous dual Bluetooth LE Audio playback. Copilot+ PC owners get a polished, easy-to-use feature that bridges accessibility, entertainment, and practical collaboration. Early preview quirks are minor and being addressed, and the roadmap promises richer multi-stream capabilities. For Windows enthusiasts, Shared Audio is a tangible reason to consider a Copilot+ upgrade—and a glimpse of how modern Bluetooth can transform personal computing.