Windows 11 Insider Experimental Preview Build 26340.9233

Release date: 21 August 2026

Changes and improvements gradually being rolled out

We've updated the AutoPlay dialog that helps you choose the preferred experience when devices are connected to your PC, such as a phone, camera, or removable drive. Rebuilt with WinUI, the refreshed experience is more consistent with the rest of Windows, supports dark mode, and continues to provide the familiar AutoPlay actions you use today. The experience is also more responsive to text scaling and display settings. Notifications for this dialog are now docked in the notification center for easy access.

The new AutoPlay experience, shown in dark mode.

A simpler way to open apps maximized

We're introducing a new accessibility setting, Open apps maximized, that automatically maximizes app windows when they open, so you no longer have to do it yourself every time. This small change removes a bit of everyday friction, whether you use a screen reader or magnification, work in tablet mode, or simply prefer a consistent, full-screen workspace.
To turn it on, go to Settings > Accessibility > Visual effects, and turn on Open apps maximized. Once enabled, Windows maximizes app windows for you as they open. Give it a try, and let us know how it works for you.

UI showing the new Open apps maximized accessibility setting in Settings.

Feedback: Share your thoughts in Feedback Hub (WIN + F) under Accessibility > Visual effects.

Windows Insiders can now manage camera, microphone, and location permissions for individual desktop apps. Previously, access for traditional desktop applications was managed through a single device-wide setting.
With this update, you can review and control access on an app-by-app basis, giving you greater visibility into which apps are requesting access to sensitive resources and more control over your privacy choices. Our goal is to make privacy permissions easier to understand and manage across the wide range of desktop apps people use every day.

UI showing the new privacy controls for individual desktop apps in Settings.

What's changing

Allow or deny access for each desktop app individually.
Go to Settings > Privacy & security > Camera, Microphone, or Location to review and manage permissions.
Apps that haven't yet accessed a resource prompt for permission the first time access is requested.

What stays the same

Existing app permission decisions are preserved.
Apps previously granted access continue to have access.
Apps previously denied access remain denied.
No action is required, and no settings are reset.
Existing enterprise policies continue to function as designed. We're exploring additional management capabilities.

Notes

Most desktop apps appear with clear app attribution. However, some apps that rely on shared system components, browser-hosted experiences, or similar technologies might appear under a different name than expected.
Some desktop apps might appear as Unsigned if Windows can't verify publisher information. Only grant access to apps you recognize and trust.

Feedback: Share your thoughts in Feedback Hub (WIN + F) under Settings > Privacy Settings.

PDF and non-HTML files downloaded from the web can now be previewed automatically in the preview pane.

This update provides support for in-app purchases in packaged WinUI 3 apps that require elevation, helping developers offer purchases through Microsoft's integrated commerce platform.

Fixed an issue in the latest builds causing taskbar animations to briefly work and then stop working.

Fixed an issue in the latest builds causing the mouse cursor not to be visible in certain apps.

Fixed an issue from the last flight causing Settings > Windows Update > Windows Insider Program > Flags to appear empty even though flags were available.
Updated Settings > Apps > Installed apps to show the version number at the top level for packaged apps, as it already does for other apps.

Updates are based on Windows 11, version 26H2 via an enablement package (Build 26340.9233).
Many features are rolled out using Controlled Feature Rollout technology, starting with a subset of Insiders and ramping up over time. We monitor feedback to see how they land before pushing them out to everyone in this channel.
The desktop watermark shown at the lower right corner of the desktop is normal for Windows Insider pre-release builds.
Features and experiences included in these builds might never get released as we try out different concepts and get feedback. Features might change over time, be removed, or replaced and never get released beyond Windows Insiders. Some of these features and experiences could show up in future Windows releases when they're ready.
Some features in active development we preview with Windows Insiders might not be fully localized, and localization will happen over time as features are finalized. As you see issues with localization in your language, report those issues to us via Feedback Hub.
Check out Flight Hub for a complete look at what build is in which Insider channel.