Builds 29591 and 28020.2134 for Windows 11 26H1 and Feature Platforms with new features

Microsoft adds Bluetooth audio sharing, update improvements, and Storage fixes to Windows 11 preview builds.

Windows 11 Insider Preview Build 29591 update screen overlaid on a scenic cliffside landscape. Text and icons detail update status.
Windows 11 build 29591 / Image: Mauro Huculak
  • Windows 11 build 29591 introduces Shared Audio, allowing two Bluetooth LE Audio devices to listen to the same audio stream simultaneously.
  • Windows Update gains new controls, including the ability to skip updates during setup and pause updates indefinitely.
  • Build 28020.2134 for version 26H1 includes the same update improvements, plus SSDP changes and a known Reset this PC bug.

Microsoft is releasing Windows 11 build 29591 for version “Feature Platforms” (version 27H2) and Windows 11 build 28020.2134 for version 26H1 through the Experimental channel, delivering new features, incremental changes, and fixes.

According to the official changelog“Windows 11 Insider Preview Quality Update (29591)introduces various significant changes for Windows Update, rolls out the new Shared Audio feature, and pushes Storage settings improvements.

As part of build 28020.2134 (Experimental experience for version 26H1), the company is rolling out with the same Windows Update improvements as the Feature Platforms version and Simple Service Discovery Protocol (SSDP) changes.

Windows 11 build 29591

In the Experimental experience for Feature Platforms, the company is rolling out the ability to skip updates during the initial setup.

Windows 11 pause updates calendar setting

You can now extend the update pause indefinitely through the Windows Update settings.

In addition, the company is updating the Power menu options to always shut down or restart independently of updates, and there are more insights about updates.

Shared Audio

Windows 11 is also introducing a new “Shared Audio” feature that allows two people to listen to the same audio from a single computer simultaneously.

The feature uses Bluetooth LE Audio broadcast technology to stream audio to two compatible Bluetooth devices at once, making it easier to share music, movies, or other media without speakers.

Users can enable the feature from the Quick Settings panel by selecting “Shared Audio,” choosing two supported paired devices, and starting the audio session.

Shared audio feature
Shared audio feature / Image: Microsoft

There’s also a new Taskbar indicator that appears whenever audio sharing is active. This visual cue makes it clear that your sound is being shared and provides one-click access to the sharing settings.

Storage changes

Microsoft is updating the Storage settings experience on Windows 11 to reduce unnecessary User Account Control prompts. Opening Settings > System > Storage will no longer immediately trigger a UAC dialog. Instead, the prompt now only appears when accessing the Temporary files section.

Windows 11 build 28020.2134

As part of the Windows 11 build 28020.2134, Microsoft rolls out general improvements and fixes to improve the overall experience.

In the Experimental experience for version 26H1, the company is rolling out the ability to skip updates during the initial setup.

Windows 11 pause updates calendar setting

You can now extend the update pause indefinitely through the Windows Update settings.

Furthermore, Microsoft is updating the Power menu options to always shut down or restart independently of updates, and there are more insights about updates.

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In addition, this preview improves the reliability of Simple Service Discovery Protocol (SSDP) notifications to reduce instances where the service may become unresponsive.

Finally, in this preview, Microsoft notes a known issue that resetting a device may get stuck in “Reset this PC.”

Other details

It’s important to clarify that Windows 11 26H1 is not a feature update for existing devices. The software giant has explicitly confirmed that version 26H1 is not an upgrade path for computers running Windows 11 25H2 or any earlier release.

This release is designed exclusively for new ARM64 hardware and will ship only on next-generation computers, starting with devices powered by Snapdragon X2 Plus, Elite, and Extreme processors. Systems based on Intel or AMD platforms will never receive Windows 11 26H1 through Windows Update or any other supported upgrade channel.

Preview build download

To download and install this Windows 11 build, enroll your devices in the Experimental experience 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.

Alternatively, you can also download the ISO files from the Windows Insider Preview Downloads page. Specific preview builds are available for a limited time only. 

About the author

Mauro Huculak is a Windows How-To Expert and founder of Pureinfotech in 2010. With over 22 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].

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