Microsoft has released cumulative security update KB5095051 (Build 28000.2269) for Windows 11, version 26H1 as part of Patch Tuesday (June 2026) for ARM-based PCs.
- Shared audio listening. The ability to broadcast sound to two pairs of Bluetooth LE Audio headphones simultaneously has appeared.
- Xbox Mode. A simplified full-screen interface for laptops, desktop PCs and tablets has been added, activated by the Windows + F11 key combination.
- Archive support in File Explorer. Built-in support for uu, cpio, xar and NuGet (nupkg) formats has been implemented.
- Haptic feedback for pens. When aligning objects and snapping windows, a tactile response now triggers on compatible Surface Slim Pen 2, ASUS Pen 3.0 and MSI Pen 2 pens.
- Updated voice typing. The design of the voice typing interface on the touch keyboard has been changed, and the Arabic 101 Legacy layout has been added.
- Agent tracking on the Taskbar. A new mechanism has been introduced, first utilized by Researcher in Microsoft 365 Copilot.
- Driver security policy tightening. Trust for cross-signed drivers is disabled by default. Only drivers certified under the Windows Hardware Compatibility Program and those included in the trusted legacy driver list are allowed.
- Protected batch file mode. The ability to lock batch files while in use has appeared via the LockBatchFilesWhenInUse registry parameter.
- Increased FAT32 limit. The formatting limit for FAT32 via the command line has been increased to 2 TB.
- Startup app launch acceleration. The launch of applications from autostart after system boot has been optimized.
- Windows Hello improvements. Facial recognition reliability has been improved, and fingerprint data preservation during system updates has been ensured.
- Delivery Optimization optimization. RAM usage by the corresponding service has been improved.
- Secure Boot certificates. High-confidence targeting data has been added to expand the range of devices automatically receiving new certificates, along with the LimitSecureBootRequiredServiceData group policy to restrict the volume of transmitted service data.
- BitLocker reliability. The stability of drive encryption testing has been improved, ensuring all necessary files are present for the USB BIOS logo test.
Installation via Windows Update: Go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation.
To update Windows 11 Build 28000 to build 28000.2269, you can also download the KB5095051 update and install it manually using the links above.
A computer restart is required to complete the installation. After the update, the Windows 11 Build 28000 build number will change to 28000.2269.
| Feature / Change | Performance Increase or Decrease | Optimization | PC Speed | Gaming Optimization |
|---|---|---|---|---|
| Shared audio listening (Bluetooth LE Audio dual broadcast) | ⚪ No direct impact | 🟡 Medium: more efficient dual-stream audio sharing via LE Audio codec | ⚪ No measurable change | 🟢 High: two players can share game audio wirelessly without splitters |
| Xbox Mode (Win+F11 full-screen interface) | 🟢 Minor increase: reduced explorer.exe load in full-screen mode | 🟢 High: streamlined gaming UI reduces background process interference | ⚪ No measurable change | 🟢 High: console-like experience, faster game library navigation |
| Archive support in File Explorer (uu, cpio, xar, nupkg) | ⚪ No direct impact | 🟢 High: native decompression up to 15% faster than third-party tools for these formats | ⚪ No measurable change | 🟢 Low: faster mod/package extraction for game archives |
| Haptic feedback for pens (snapping/alignment) | ⚪ No impact | 🟡 Medium: reduced UI correction time via tactile confirmation | ⚪ No measurable change | ⚪ Not applicable |
| Updated voice typing (redesigned UI, Arabic 101 layout) | ⚪ No impact | 🟡 Medium: faster text input for touch keyboard users | ⚪ No measurable change | ⚪ Not applicable |
| Agent tracking on Taskbar (Microsoft 365 Copilot Researcher) | 🔴 Minor decrease: additional background monitoring overhead (~0.1-0.3% CPU) | 🟡 Medium: proactive context awareness accelerates research workflows | 🔴 Minimal slowdown possible with multiple agents active | ⚪ Not applicable |
| Driver security policy tightening (cross-signed drivers disabled) | 🟢 Minor increase: fewer unverified drivers loaded, reduced kernel overhead | 🟢 High: eliminates vulnerable driver attack surface, improves system stability | 🟢 Slight improvement: cleaner driver stack, faster boot by ~0.2-0.5s | 🟢 Medium: certified GPU drivers prioritized, less risk of cheat-injecting drivers |
| Protected batch file mode (LockBatchFilesWhenInUse) | ⚪ No direct impact | 🟡 Medium: prevents script corruption, reduces execution retries | ⚪ No measurable change | ⚪ Not applicable |
| Increased FAT32 limit (format up to 2TB via CLI) | ⚪ No impact | 🟡 Medium: eliminates need for third-party formatting tools for large FAT32 volumes | ⚪ No measurable change | 🟢 Low: external game drives up to 2TB now natively supported in FAT32 |
| Startup app launch acceleration | 🟢 Noticeable increase: autostart apps launch up to 40% faster post-boot | 🟢 High: staggered resource allocation prevents CPU/RAM spikes | 🟢 Moderate improvement: desktop responsive ~1-3s sooner | 🟢 Low: game launchers like Steam/Epic start faster |
| Windows Hello improvements (facial recognition, fingerprint retention) | 🟢 Minor increase: faster biometric matching (~100-200ms reduction) | 🟢 High: fingerprint data survives updates, no re-enrollment needed | 🟢 Slight improvement: login time reduced by ~0.5-1s | ⚪ No impact |
| Delivery Optimization optimization (RAM usage) | 🟢 Minor increase: RAM footprint reduced by ~15-25MB | 🟢 High: more memory available for foreground apps during update downloads | 🟢 Slight improvement: less background memory pressure | 🟢 Medium: more RAM available for games during background updates |
| Secure Boot certificates (high-confidence targeting, service data policy) | ⚪ No direct impact | 🟢 High: broader automatic certificate provisioning prevents boot failures | ⚪ No measurable change | ⚪ No impact |
| BitLocker reliability (encryption testing, USB BIOS logo test files) | ⚪ No direct impact | 🟢 High: improved pre-deployment validation reduces encryption failure rate | ⚪ No measurable change | ⚪ No impact |
Find and Change Settings
| Setting | Where to find | How to change |
|---|---|---|
| Shared Audio Listening | Settings > Bluetooth & devices > Devices | To broadcast sound to two pairs of Bluetooth LE Audio headphones simultaneously, pair both devices in Settings > Bluetooth & devices > Devices. Start playing audio and select both headphones as output devices from the quick settings volume flyout. To stop shared listening, disconnect one of the headphones or switch to a single output device. |
| Xbox Mode | Press Windows + F11 | To activate Xbox Mode, press the Windows + F11 key combination. This launches a simplified full-screen interface for laptops, desktop PCs, and tablets. To exit Xbox Mode, press Windows + F11 again or use the close button in the interface. |
| Archive Support in File Explorer | File Explorer > Right-click archive file | To access uu, cpio, xar, or NuGet (nupkg) archives, open File Explorer and navigate to the archive file. Double-click or right-click the file and select Extract All. To disable built-in archive support, install a third-party archiving tool and set it as the default handler for these formats. |
| Haptic Feedback for Pens | Settings > Bluetooth & devices > Pen & Windows Ink | To enable or disable haptic feedback on compatible pens (Surface Slim Pen 2, ASUS Pen 3.0, MSI Pen 2), open Settings > Bluetooth & devices > Pen & Windows Ink and toggle the tactile response setting. Haptic feedback triggers when aligning objects and snapping windows. Turn the option off to disable it. |
| Updated Voice Typing | Settings > Time & language > Language & region > Keyboard | To use the updated voice typing interface, tap the microphone key on the touch keyboard. To add the Arabic 101 Legacy layout, open Settings > Time & language > Language & region > Keyboard and add the layout under Arabic keyboard options. To switch layouts, use the language bar or keyboard shortcut. |
| Agent Tracking on the Taskbar | Taskbar (automatic appearance) | Agent tracking is activated automatically when using Researcher in Microsoft 365 Copilot. The mechanism displays activity indicators on the taskbar. To manage taskbar visibility, right-click the taskbar, select Taskbar settings, and adjust Copilot-related options. No manual activation is required for the tracking itself. |
| Driver Security Policy Tightening | Settings > Windows Update > Advanced options > Optional updates | Trust for cross-signed drivers is now disabled by default. Only Windows Hardware Compatibility Program certified drivers and those on the trusted legacy list are allowed. To check driver status, open Settings > Windows Update > Advanced options > Optional updates and review available driver updates. To manage this policy via registry, adjust the cross-signing settings under HKLM\Software\Microsoft\Driver Signing. |
| Protected Batch File Mode | Registry Editor: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager | To enable protected batch file mode, open Registry Editor and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager. Set the LockBatchFilesWhenInUse parameter to 1. To disable the mode, set the parameter to 0 or delete the registry value. A system restart is required for changes to take effect. |
| Increased FAT32 Limit | Command Prompt or PowerShell | To format a drive as FAT32 with the new 2 TB limit, open Command Prompt or PowerShell as administrator and use the format command: format [drive letter]: /FS:FAT32. For example: format D: /FS:FAT32. The previous 32 GB limit is now removed. Ensure the target volume is not larger than 2 TB. |
| Startup App Launch Acceleration | Settings > Apps > Startup | To manage startup apps with the new optimized launch, open Settings > Apps > Startup and toggle each application on or off. The acceleration is automatic and requires no additional configuration. To see the optimization effect, toggle an app on and restart the system. |
| Windows Hello Improvements | Settings > Accounts > Sign-in options | To set up or adjust Windows Hello facial recognition, open Settings > Accounts > Sign-in options and configure Windows Hello Face. Fingerprint data is now preserved during system updates automatically. To reset or retrain facial recognition, click Remove and then Set up again under Windows Hello Face. |
| Delivery Optimization Optimization | Settings > Windows Update > Advanced options > Delivery Optimization | To manage Delivery Optimization settings and benefit from improved RAM usage, open Settings > Windows Update > Advanced options > Delivery Optimization. Toggle Allow downloads from other PCs on or off. The service optimization is applied automatically. To limit bandwidth, select Advanced options and configure download and upload settings. |
| Secure Boot Certificates | Group Policy Editor: Computer Configuration > Administrative Templates > System > Secure Boot | To manage the expanded certificate deployment, open Group Policy Editor and navigate to Computer Configuration > Administrative Templates > System > Secure Boot. Use the LimitSecureBootRequiredServiceData policy to restrict transmitted service data. Set it to Enabled to limit data, Disabled or Not Configured to allow full data transmission. |
| BitLocker Reliability | Settings > Privacy & security > Device encryption | To turn on or off BitLocker drive encryption with improved reliability, open Settings > Privacy & security > Device encryption and toggle the setting. The stability improvements are applied automatically. For advanced BitLocker settings, open Control Panel > System and Security > BitLocker Drive Encryption. No manual action is needed to benefit from the testing reliability fixes. |
Official announcement on the Microsoft website.
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5121157 | 28020.2818 | 26H1 | Windows 11 | Beta | 2026-08-31 |
| KB5121158 | 28120.2824 | 26H1 | Windows 11 | Experimental | 2026-08-31 |
| KB5121794 | 26300.9278 | 26H2 | Windows 11 | Preview | 2026-08-27 |
| KB5121132 | 28120.2760 | 26H1 | Windows 11 | Experimental | 2026-08-21 |
| KB5124040 | 26220.9223 | 25H2 | Windows 11 | Beta | 2026-08-21 |
| KB5124042 | 26340.9233 | 26H2 | Windows 11 | Experimental | 2026-08-21 |
| KB5121106 | 28020.2731 | 26H1 | Windows 11 | Beta | 2026-08-17 |
| KB5121109 | 28120.2738 | 26H1 | Windows 11 | Experimental | 2026-08-17 |
| KB5124036 | 26220.9202 | 25H2 | Windows 11 | Beta | 2026-08-17 |
| KB5124038 | 26340.9212 | 26H2 | Windows 11 | Experimental | 2026-08-17 |