Windows 11 June 2026 Security Update: Key Features and Improvements

Microsoft has released the June 2026 Patch Tuesday update, KB5094126 (OS Builds 26200.8655 and 26100.8655), targeting Windows 11 versions 25H2 and 24H2. This extensive update includes enhancements ranging from accessibility improvements and USB reliability to font rendering fixes and Secure Boot certificate updates. Below, we explore the top five features of this update, along with a bonus and an honorable mention.

1. Low Latency Profile Improves Start Menu, Search, and Action Center Responsiveness

Microsoft describes this feature in the changelog: "[General Performance] This update accelerates app launch and core shell experiences such as Start menu, Search, and Action Center."

The Low Latency Profile introduces a CPU scheduling change. By briefly spiking the CPU to its maximum frequency for 1-3 seconds during high-priority actions, such as opening the Start menu or Search, the system ensures immediate responsiveness. Unlike the default Windows CPU scheduler, which balances power and performance, this feature prioritizes speed to enhance the user experience.

Testing revealed significant improvements on low-end hardware. For example, a dual-core VM with 4GB RAM saw Edge's CPU utilization spike to 96% during launch, opening almost instantly, then returning to normal within seconds. Heavy applications like Outlook displayed noticeable performance gains on constrained systems, while high-end hardware showed smoother shell transitions without affecting battery life or generating excessive heat.

Although initially controversial, this approach aligns with techniques used by Apple and Linux for interactive task latency optimization. The feature is in a gradual rollout phase, so not all devices will activate it immediately. Users can verify its activation by monitoring brief CPU spikes in Task Manager during Start or Search actions.

2. Multi-App Camera Removes Webcam Lock Restrictions

The changelog highlights: "[Camera] New! Windows 11’s Multi-App Camera feature allows multiple applications to access your camera stream simultaneously."

Before this update, Windows restricted webcam use to one application at a time, causing conflicts during multitasking. The Multi-App Camera feature removes this limitation, allowing simultaneous access. For instance, you can now participate in a Google Meet call while recording with OBS or using two conferencing tools concurrently.

Unlike Android and macOS, which enforce exclusive camera access or require workarounds, Windows 11 now natively supports multi-app camera functionality. This feature is configurable via Settings and Group Policy, with enterprise admins gaining additional troubleshooting tools through Basic Camera Mode.

3. Shared Audio Enables Dual-Headphone Listening

As per Microsoft: "[Shared Audio] New! Shared Audio enables two people to listen to the same audio from a single Windows 11 PC at the same time. It uses Bluetooth LE Audio broadcast technology."

Windows 11's Shared Audio introduces AirPods-style audio sharing without locking users into a specific hardware ecosystem. Using Bluetooth LE Audio, users can pair two compatible headphones and share audio effortlessly via the Quick Settings menu. This feature works with any Bluetooth LE Audio-compatible devices, promoting openness and compatibility across brands.

Note that Classic Bluetooth headphones are incompatible due to the reliance on Bluetooth LE Audio's synchronized multi-stream capabilities. However, most modern headsets now support this standard.

4. Task Manager Adds NPU Usage Visibility

Microsoft explains: "[Task Manager] New! Task Manager now offers improved visibility into NPU usage on PCs with an NPU."

The Task Manager update introduces optional columns for NPU (Neural Processing Unit) usage across Processes, Users, and Details pages, along with new memory-related columns. Users can now monitor AI-related tasks, such as transcription or local model inference, at the process level. Additionally, neural engines integrated into GPUs are now visible on the Performance page.

IT admins benefit from a new Isolation column, which indicates whether an app is running inside Windows' security sandbox. These enhancements provide greater diagnostic and security insights.

5. Windows Search Now Finds Files with Two Characters

The changelog states: "[Windows Search Box] Windows Search will now find and prioritize files with as few as two characters."

Previously, Windows Search required a minimum of three characters to return file results. The update reduces this threshold to two characters, streamlining file access for power users handling short-named files or abbreviations. This improvement prioritizes local files over web results for a more efficient search experience.

While a more advanced feature, Search by Substring, remains in testing, this update marks a significant step toward a cleaner and more functional search interface.

Bonus: Windows Hello Defaults Back to Biometrics

The update resolves an issue where Windows Hello would default to PIN prompts instead of biometric authentication after certain events, such as restarts or PIN verifications. With this fix, face and fingerprint sign-ins reassert themselves as the default, improving user convenience and reliability.

Honorable Mention: User Folder Naming During Setup

The changelog notes: "[Windows Setup] New! You can now choose a custom name for your user folder on the Device Name page during Windows setup."

For the first time, Windows setup allows users to specify a custom folder name during the initial configuration. However, this option is only available during fresh installations, limiting its impact on existing users.

Why the June 2026 Update Is Crucial

This update also includes mandatory Secure Boot certificate updates, replacing certificates originally issued in 2011 with 2023 versions. This change installs immediately upon updating, ensuring enhanced security.

Additional improvements cover USB4 display reliability, Times New Roman font rendering, wallpaper persistence, touch keyboard functionality, and Microsoft Store download speeds. Users can install this update by navigating to Settings > Windows Update > Check for updates and applying KB5094126.