- Windows 11 build 26340.9233 is rolling out through the Experimental channel for version 26H2 with several improvements.
- The OS gets a redesigned WinUI-based AutoPlay dialog with dark mode and better scaling support.
- A new accessibility option automatically opens apps maximized.
- Win32 apps can now have individual camera, microphone, and location permissions.
- File Explorer, Microsoft Store, Taskbar, Input, Feature Flags, and Settings also receive fixes and improvements.
Microsoft is releasing the Windows 11 Insider Preview Quality Update (26340.9233) for version 26H2 through the Experimental experience in the Windows Insider Program. This wave of updates introduces improvements to existing features, along with various fixes, as part of the Windows K2 initiative.
According to the official notes, Windows 11 build 26340.9233 introduces an interface update for the AutoPlay dialog that appears when connecting external storage. Microsoft is also pushing the previously discovered option to open apps maximized, and you can now manage camera, microphone, and location access for traditional (Win32) apps.
This update also rolls out an updated version of File Explorer that can now generate previews for PDF and non-HTML files. In addition, the company is updating and fixing the Microsoft Store, Taskbar, and input.
What’s new on Windows 11 build 26340.9233 (Experimental)
These are the new features and improvements rolling out in the Experimental channel:
Modernized AutoPlay experience
Microsoft is also giving AutoPlay a much-needed visual refresh in this flight.
The dialog that appears when you connect a phone, camera, removable drive, or other device has been rebuilt with WinUI, bringing the design more in line with the rest of Windows 11 while retaining the familiar AutoPlay actions.
It now supports dark mode, responds better to text scaling and display settings, and moves notifications to the notification center for easier access.
A simpler way to open apps maximized
Windows 11 is also removing a small but annoying bit of friction with a new “Open apps maximized” accessibility setting.
When you enable the feature, the system automatically maximizes apps as they launch, which can be especially useful with screen readers, magnification, tablet use, or simply for anyone who prefers a consistent full-screen workspace.
The option is known as “Open apps maximized,” and it’s available under Settings > Accessibility > Visual effects.
Per-Win32 app privacy permissions
Windows 11 is giving desktop app permissions a welcome privacy upgrade.
Users can now manage camera, microphone, and location access on a per-app basis, instead of relying on a single device-wide setting for traditional desktop applications. That makes it easier to see which apps can access sensitive resources and close access where it isn’t needed.
Your existing permission choices are preserved, so previously allowed apps remain allowed and denied apps stay denied. No settings need to be reset, and existing enterprise policies continue to work as expected.
Microsoft notes that some apps may appear under unexpected names, particularly those using shared system components or browser-hosted experiences, while apps with unverifiable publisher information may appear as “Unsigned,” so only grant access to apps you recognize and trust.
Although the operating system includes the ability to manage permissions per application, it was limited to Microsoft Store apps. It wasn’t possible to enforce the permissions on each individual traditional application. If you wanted to block a traditional app, you needed to block all of them.
Other fixes
In addition, Windows 11 build 26340.9233 also pushes several fixes and improvements.
- File Explorer: PDF and non-HTML files downloaded from the web can now be previewed automatically in the preview pane.
- Microsoft Store: Packaged WinUI 3 apps that require elevation can now support in-app purchases through Microsoft’s integrated commerce platform.
- Taskbar: Fixed an issue causing taskbar animations to briefly work before stopping.
- Input: Fixed an issue where the mouse cursor could disappear in certain apps.
- Feature flags: Fixed an issue causing the “Flags” to appear empty even when flags were available.
- Settings: The “Installed apps” page now shows the version number at the top level for packaged apps, matching the behavior already available for other apps.
Feature flags for build 26340.9233
Here’s a complete list of the flags you can use to enable experimental features on Settings > Windows Update > Windows Insider Program > Feature flags:
- Camera Roll Backup
- Emoji 17.0
- Enhanced start menu customization
- Improved Context Menu
- Magnifier toolbar refresh
- Modernized AutoPlay Experience
- Mouse crosshairs and pointer improvements
- Refined Windows Search
- Short Query File Search support
Download Windows 11 update 26340.9233
To download and install these Windows 11 builds, enroll your Devices in the Experimental channel through the “Windows Insider Program” settings from the “Update & Security” section. Once you enroll the computer in the program, you can download the build from the “Windows Update” settings by turning on the “Get the latest updates as soon as they’re available” option and clicking the “Check for Updates” button.
Which new Windows 11 feature are you most interested in?
Voting closes: August 28, 2026 1:00 pm
Alternatively, you can download the ISO files from the Windows Insider Preview Downloads page. Specific preview builds are available for a limited time only.
Mauro Huculak is a Windows How-To Expert and founder of Pureinfotech in 2010. With over 23 years as a technology writer and IT Specialist, Mauro specializes in Windows, software, and cross-platform systems such as Linux, Android, and macOS.
Certifications: Microsoft Certified Solutions Associate (MCSA), Cisco Certified Network Professional (CCNP), VMware Certified Professional (VCP), and CompTIA A+ and Network+.
Mauro is a recognized Microsoft MVP and has also been a long-time contributor to Windows Central.
You can follow him on YouTube, Threads, BlueSky, X (Twitter), LinkedIn and About.me. Email him at [email protected].
