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What's new in the Windows 11 Insider builds for 7 October 2026

Affects
  • Windows 11, version 26H2
  • Build 26340.9212
Priya Natarajan3 min read

Quick answer

The latest Windows 11 Insider preview release, Build 26340.9212 for Windows 11 version 26H2, introduces a redesigned File Explorer context menu, automatic Wi-Fi profile sharing in WinRE, and support for Emoji 17.0. It also removes the legacy WMIC tool, updates the Magnifier toolbar, and delivers multiple stability fixes across Settings and input methods.

Windows 11 Insider preview builds offer early adopters and technical enthusiasts a first look at upcoming operating system features and underlying platform changes. Build 26340.9212, which is based on Windows 11, version 26H2 via an enablement package, is available to Insiders in the Experimental channel. This build brings a mix of modernized visual updates, system maintenance, and functional enhancements to daily Windows workflows.

Whether you test preview flights on a dedicated secondary device or follow Windows development closely, understanding the updates in Build 26340.9212 helps you evaluate system stability and feature changes. Highlights in this release affect several key built-in applications and services, including File Explorer, Settings, Magnifier, and the Windows Recovery Environment (WinRE). As with most pre-release builds in the Experimental channel, a subtle desktop watermark in the lower-right corner is expected.

Highlights

  • Redesigned File Explorer context menu: Introduces a streamlined context menu in File Explorer that reduces top-level visual clutter, keeps frequent actions easily reachable, and adds a Settings page to customize context menu options.
  • WinRE Wi-Fi auto-connect: The Windows Recovery Environment (WinRE) can now automatically connect to eligible Wi-Fi networks using saved profiles from the main OS, including supported certificate-based networks, eliminating manual password entry during recovery.
  • Camera Roll Backup setup: Adds new setup entry points under Settings > Home and Settings > Accounts to configure Camera Roll Backup and automatically back up photos and videos to OneDrive.
  • Emoji 17.0 support: Introduces support for Emoji 17.0 characters, including distorted face, fight cloud, and hairy creature, accessible using the Windows key plus Period (.) shortcut, along with design tweaks for saluting face, goose, and lotus emoji.
  • WMIC tool removal: Windows Management Instrumentation Command-line (WMIC) has been completely removed in this release as part of its ongoing deprecation from Windows 11.
  • Magnifier toolbar refresh: Refreshes the Magnifier toolbar with updated icons aligning with Windows 11 visual design, alongside refined padding and spacing, while retaining standard zoom controls and Read Aloud features.
  • Get Started app updates: Adds new personalized pages to the Get Started app, including app installation, site pinning, and custom theme selection flows.
  • Personalization enhancements: Adds support for Device-Independent Bitmap (DIB) image files, improves desktop slideshow transition reliability, expands multi-desktop slideshow support, and increases preview resolutions in Settings > Personalization > Background.
  • Bug fixes and stability: Resolves an issue where File Explorer image previews displayed an unexpected thick band across the middle, fixes third-party IME status window positioning, resolves Settings crashes on the Date & Time page, and fixes an xtajit64.dll crash on Arm64 PCs.

Known issues

Microsoft reports no known issues for this update.

Should you install it?

If you are an active member of the Windows Insider Program in the Experimental channel who wants to test the redesigned File Explorer context menu, updated Magnifier visuals, or enhanced WinRE networking features, Build 26340.9212 is a worthwhile update. It provides useful platform fixes for Settings crashes and IME input reliability while giving you early access to upcoming features introduced in build 26340.9212.

However, if you rely on your PC for mission-critical work, you should wait or select a more stable channel. Builds in the Experimental channel carry variable stability and rough edges, and features deployed using Controlled Feature Rollout (CFR) technology may be modified or removed in future flights based on user feedback.

How to get it

Illustration: the Windows Update page in Windows 11 Settings

Illustration: the Windows Update page in Windows 11 Settings

To download and install Build 26340.9212 through Windows Update, follow these steps:

  1. Go to Settings > Windows Update > Windows Insider Program.
  2. Select Choose your Insider settings.
  3. Select the radio button for the Experimental channel.
  4. Navigate back to Settings > Windows Update.
  5. Select Check for updates.
  6. Wait for Build 26340.9212 to download and install.
  7. Restart your PC to finish installing the preview build.

If you want to manually manage individual preview features, go to Settings > Windows Update > Windows Insider Program > Feature flags to toggle supported features on or off. Note that moving between channels on the same Windows core version (such as version 26H2) uses an in-place upgrade (IPU) to keep your data intact. However, switching away from Experimental (Future Platforms) builds requires a full clean reinstallation of Windows 11.

Sources

Frequently asked questions

What build number is released in the latest Windows 11 Experimental flight?

The build number released for this Experimental channel flight is Build 26340.9212, which runs on Windows 11, version 26H2.

How do I insert the new Emoji 17.0 characters in Windows 11?

Press the Windows key plus Period (.) on your keyboard to open the built-in emoji panel, then select the new Emoji 17.0 symbols such as distorted face or fight cloud.

Can I leave the Experimental channel without reinstalling Windows 11?

If you are on the standard version 26H2 core, you can switch to Beta or Release Preview using an in-place upgrade under Settings > Windows Update > Windows Insider Program. However, if you are enrolled in Future Platforms, leaving requires a clean installation of Windows 11.

Checked against Microsoft's release notes on ; re-checked when a new build ships.

Written by

Priya Natarajan

Writes Thea's how-to guides for new and changed Windows 11 features: where a setting moved, how to turn it on or off, and what it actually does. Every guide is checked against Microsoft's release notes and updated when a new build changes the steps.

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