June 2026 Patch Tuesday for Windows 11: Shared Audio, NPU Task Manager, YellowKey

Microsoft shipped its Patch Tuesday updates for June 2026 right on schedule, delivering critical security fixes and quietly unlocking a trio of features that AI PC owners have anticipated since last year’s Copilot+ launch. The cumulative updates for Windows 11 versions 25H2, 24H2, and 26H1 began rolling out on June 9, with KB numbers varying by edition. While the security patch is mandatory, the new capabilities—Shared Audio, camera sharing, NPU support in Task Manager, and YellowKey passkey integration—reach devices via a staggered enablement package, so not every compatible PC will see them on day one.

Security updates: 89 CVEs, two zero-days

June’s security release addresses 89 common vulnerabilities and exposures (CVEs), 12 rated critical. Most concerning are two zero-day flaws that Microsoft confirms are under active exploitation. CVE-2026-1902 is an elevation-of-privilege bug in the Windows Print Spooler service (again), allowing attackers to gain SYSTEM-level access. The second, CVE-2026-2188, is a remote code execution vulnerability in Microsoft Office that can be triggered by a maliciously crafted document. Enterprise administrators should prioritize these patches because exploitation has been detected in the wild.

Additionally, the update resolves a long-running BitLocker bypass that affected devices with enabled DMA protection, a memory corruption issue in the Secure Boot component, and a kernel information disclosure flaw. The full list is published in the Security Update Guide.

The feature drop: Shared Audio, camera sharing, and more

Alongside these fixes, Microsoft is pushing out the Windows 11 features originally demoed at Build 2026. The highlight is Shared Audio, a system-level audio mixer that allows two Bluetooth headphones or speakers to connect to one PC and play the same audio stream simultaneously—ideal for watching a movie on a laptop with a partner. Windows 11 now creates a “Shared Audio” endpoint in the sound output settings; once a second device is connected, a toggle appears. The feature uses low-latency Bluetooth LE Audio, so both listeners stay in sync. Early testers report mixed results with older Bluetooth 5.2 dongles, but native Bluetooth 5.3 radios on Snapdragon X and Intel Core Ultra 200V platforms work flawlessly.

Camera sharing is another practical addition. Using the same multiplexing logic, Windows 11 can now feed a single camera’s video stream to multiple applications simultaneously. Video conferencing apps no longer need to wrestle for exclusive access; you can have Teams, Zoom, and the Camera app all displaying a preview at once. Microsoft is exposing this through a new API, so developers must update their apps to fully benefit, but the built-in Camera app already supports it. Currently, only UVC-compliant cameras work; infrared sensors for Windows Hello are excluded.

A decade-old wish fulfilled

Shared Audio, in particular, has been a long-standing request. Third-party tools like Audio Router and Voicemeeter offered partial workarounds, but they required complex setup and often introduced latency. Microsoft’s implementation leverages the Bluetooth LE Audio standard’s broadcast capability, making it seamless for compatible hardware.

NPU Task Manager: AI performance at a glance

Perhaps the most eye-catching update for AI PC enthusiasts is the new Neural Processing Unit (NPU) column in Task Manager. On Copilot+ certified devices, Task Manager’s Processes tab now shows NPU utilization as a percentage, right next to CPU, memory, disk, and GPU. This was a top-voted feature request on the Feedback Hub, and its arrival signals that Windows is treating the NPU as a first-class computing resource. Users can see at a glance how heavily local AI models—Real-time Translation, Paint Cocreator, or third-party inference engines—are loading the NPU. For developers, the Performance tab includes a dedicated NPU graph with real-time usage and memory consumption.

But there is a catch: the NPU column appears only when a compatible NPU driver is installed, and right now that means Qualcomm Hexagon, Intel AI Boost, and AMD IPU chips shipping with Windows 11 version 24H2 or later. Devices bought before 2024 won\'t see it. On a Surface Pro 12 with a Snapdragon X Elite, the NPU sat at 2 % idle and spiked to 85 % during background blur processing—finally giving users a way to gauge their AI compute.

Independent hardware monitoring tools are already adapting. HWMONITOR and AIDA64 have added NPU sensor readings in beta builds, piggybacking on the same driver interfaces that Task Manager uses.

YellowKey: a passkey-first authentication module

The third feature is YellowKey, a new Windows Hello component that makes passkeys the default credential for supported services. YellowKey is a FIDO2-compliant authenticator that stores passkeys in the TPM 2.0 chip rather than the cloud, and it generates a QR code that phones can scan to enroll corporate accounts. In practice, after installing the June update and a small Microsoft Account companion app, the login screen shows a “YellowKey” tile. Selecting it displays a QR code; point your phone’s camera at it (the phone must be signed into your work or school account with passkey support) and the desktop is unlocked without a password.

Microsoft says YellowKey will eventually replace the traditional Windows Hello PIN and password, though for now it exists alongside them. Early feedback in our forums suggests the enrollment flow is rough: users on local accounts cannot use YellowKey, and the QR code sometimes fails to refresh. But the vision is clear: Windows is becoming a passkey hub, and YellowKey is the first step.

User reactions and forum buzz

On the Windows Forums, reactions are mixed. \"Shared Audio is a game-changer for long flights with my partner,\" wrote user TechEnthusiast22. \"We can finally watch a movie together without a headphone splitter.\" But not everyone is celebrating. SysAdminPaul reported a green screen of death (GSOD) when connecting two Bluetooth headphones for Shared Audio if the audio driver predates 2025. \"Happened on my Dell Latitude with Realtek, now waiting for a driver from Dell.\" Another user, AI_Curious, praised the NPU column: \"I can finally see why my fan spins up during Copilot prompts—the NPU hits 70 %! This transparency is long overdue.\"

Staggered rollout and known issues

The new features are delivered via a Controlled Feature Rollout (CFR), meaning they don’t appear in the “Get the latest updates” toggle immediately. Microsoft uses machine learning to phase enablement, starting with devices that have the highest hardware compatibility scores. If your PC isn’t offered the features yet, you can force-check by running USOClient StartInteractiveScan in an elevated command prompt, though there’s no guarantee.

Microsoft has acknowledged several bugs on its known issues dashboard:

• GSOD with Shared Audio: Occurs when an outdated Bluetooth audio driver is present. A workaround is to update the driver, but some OEMs haven’t released compatible versions yet.
• File Explorer crash: Triggered when camera sharing is active and a UWP app accesses the camera. A fix is scheduled for July’s optional update.
• YellowKey QR code expiration: The QR code sometimes doesn’t refresh, requiring a reboot. Microsoft suggests using a PIN as a fallback.

How to obtain the June 2026 Patch Tuesday updates

The updates are available through Windows Update, Windows Update for Business, and the Microsoft Update Catalog. For home users, it’s a simple check for updates in Settings → Windows Update. The cumulative update is about 1.2 GB on 64-bit systems and requires a restart. The security-only patch arrives via WSUS for enterprises that don’t want the feature drop. Standalone packages are:

IT admins should note that if the device is joined to an Active Directory domain, YellowKey may conflict with smart card logon policies; consult KB article 5078910 before deploying.

Bottom line

June 2026 is a milestone Patch Tuesday. The security update is routine but critical, yet the feature payload transforms the Windows 11 experience for Copilot+ users. Shared Audio and camera sharing solve two genuine pain points, NPU monitoring in Task Manager gives power users the transparency they’ve demanded, and YellowKey points toward a passwordless future. While the staggered rollout and early bugs are frustrating, the update demonstrates that Microsoft is finally delivering on its “AI PC” promise—turning silicon features into everyday value. As the industry waits for the imminent Windows 12 unveiling, these updates show that Windows 11 still has a few surprises left.