What's new in the Windows 11 Insider builds for 6 November 2026
- Windows 11, version 24H2 (Build 26100)
- Windows 11, version 25H2 (Build 26200)
- Windows 11, version 26H2 (Build 26300)
- Windows 11, version 26H1
- Build 26100.9539
- Build 26200.9539
- Build 26300.9539
PCDecoder Desk4 min readQuick answer
The latest Windows 11 Insider flighting and servicing releases bring substantial improvements across File Explorer, accessibility, and peripheral device handling. Key highlights include an Open apps maximized setting, support for Emoji 17.0, single-finger and automatic touchpad scrolling, and Copilot key remapping. These builds also address system stability concerns such as Bluetooth streaming crash error 0x139.
Microsoft's Windows Insider Preview builds allow users to test upcoming features and platform changes across distinct channels before broad general availability. Depending on your enrolled branch—such as the Experimental channel, Beta channel, or Release Preview—builds align to specific development cores including Windows 11, version 24H2 (Build 26100), version 25H2 (Build 26200), version 26H2 (Build 26300), or version 26H1 targeted for specific silicon. Updates such as KB5124010 deliver feature rollouts and crucial bug fixes across these builds.
Staying on the latest Windows Insider Preview builds ensures your PC receives critical functional enhancements and keeps flight certificates active so your device can continue receiving preview updates. These builds introduce quality-of-life adjustments to daily tools like File Explorer and Settings, expand accessibility capabilities for display and input devices, and refine hardware compatibility for Bluetooth audio accessories and precision touchpads.
Highlights
- File Explorer: The preview pane adjusts handling for downloaded files by adding a Preview anyway button for HTML files while automatically previewing non-HTML files such as PDFs; File Explorer Home also preserves whether sections are expanded or collapsed.
- Accessibility: A new setting named Open apps maximized is available under Settings > Accessibility > Visual effects to automatically launch application windows in full view.
- Emoji 17.0: Adds support for Unicode Emoji 17.0 characters—including distorted face, fight cloud, and hairy creature—accessible via the Windows key + Period (.) shortcut, alongside refined designs for existing emoji like saluting face, goose, lotus, and kissing cat.
- Precision Touchpad: Adds single-finger vertical scrolling starting from the left or right edge, as well as automatic scrolling that keeps scrolling without lifting your fingers when moving near the edge of the touchpad.
- Copilot key: Introduces a setting that allows users to remap the physical Copilot key to function as either the Right Ctrl key or the Context Menu key.
- Bluetooth stability: Resolves a blue screen crash with bug check error code 0x139 during Bluetooth audio streaming, improves LE Audio and shared audio reliability, and ensures the volume flyout appears during voice calls when adjusting volume from a Bluetooth Classic Audio accessory.
- Windows Recovery Environment (WinRE): Enables WinRE to automatically reuse saved Wi-Fi network profiles (including certificate-based networks) during quick machine recovery or cloud rebuild scenarios, and adds a recovery remote management plug-in for mobile device management providers.
- Settings and Personalization: Desktop backgrounds now support DIB image files and allow slideshow wallpapers across multiple desktops without reverting to Picture mode, while Settings > Apps > Installed apps now displays version numbers at the top level for packaged apps.
Known issues
- USB Audio Class 1.0 devices: Devices might fail to start or produce sound after installing security updates such as KB5122871 (OS Build 26100.33438), showing Device Manager error "This device cannot start (Code 10)", unresponsive volume controls, or failing in multichannel configurations. Multichannel 8-channel and 3D audio modes are addressed in out-of-band update KB5129235, while other symptoms remain under investigation.
- Exchange Server sign-in and mail delivery: On systems interacting with Exchange Server after update KB5126646 (OS Build 26100.33650), users might experience Outlook on the web (OWA) connection failures with error MapiExceptionMdbOffline (hr=0x80004005, ec=1142) and Event ID 1006 due to an Endpoint Mapper memory limit of 512 simultaneous calls. Microsoft provides a registry workaround to increase simultaneous Endpoint Lookup calls.
Should you install it?
If your device is enrolled in the Windows Insider Program to preview upcoming features or validate operating system deployments, you should install these updates to keep your flighting certificates active and ensure you receive supported builds. Users who benefit most are those testing new accessibility workflows, precision touchpad gestures, or multi-channel Bluetooth audio configurations.
Keep in mind that Windows Insider Preview builds represent prerelease software. Features rolled out via the Experimental channel or Beta channel can exhibit variable stability, and builds on the Experimental (Future Platforms) branch require a clean installation of Windows to leave or switch channels. If your primary computer requires complete day-to-day reliability without rough edges, consider staying on broad retail releases or opting for the Release Preview channel.
How to get it
- Open the Settings app on your Windows 11 PC.
- Navigate to Windows Update, then select Windows Insider Program.
- Choose your Insider settings by selecting the radio button for your desired channel: Experimental channel, Beta channel, or Release Preview.
- If you are in the Experimental channel and want to manually enable specific new capabilities that use Controlled Feature Rollout, navigate to Settings > Windows Update > Windows Insider Program > Feature flags and toggle them on.
- Return to Settings > Windows Update and select Check for updates to download and install the latest available build package.
- For standalone servicing packages, search the Microsoft Update Catalog using the specific update identifier (such as KB5124010 or KB5129235) to download and apply the package manually if Windows Update fails to install it automatically.
Sources
Frequently asked questions
What happens if I stay on an outdated Windows Insider build?
Older flight certificates can expire, causing devices on outdated builds to stop receiving updates. Once stuck, recovering eligibility for future flights requires a clean installation of Windows.
Can I switch channels without losing my data?
You can move between the Experimental, Beta, and Release Preview channels on the same core version using an in-place upgrade without wiping your files. However, leaving the Experimental (Future Platforms) channel requires a clean reinstall of Windows 11.
How do I turn on the new Open apps maximized setting?
Go to Settings > Accessibility > Visual effects and toggle on the Open apps maximized option to make applications launch in full screen automatically.
Where can I remap the Copilot key?
Windows 11 includes a setting allowing you to configure the Copilot key to act as either the Right Ctrl key or the Context Menu key to suit standard keyboard workflows.
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