Builds 28120.2315 and 28020.2308 for Windows 11 26H1 out fixing annoying issues in Beta and Experimental

Microsoft refines Windows 11 26H1 with low-key Insider updates targeting audio reliability and Live Captions responsiveness in the latest Beta and Experimental builds.

Windows 11 26H1 builds
Windows 11 26H1 builds / Image: Mauro Huculak
  • Windows 11 build 28020.2308 has been released in the Beta channel with fixes and improvements for version 26H1.
  • Build 28120.2315 also releases for version 26H1 with a small set of changes, but this preview is available in the Experimental channel.

Microsoft is now making available Windows 11 Insider Preview builds 28020.2308 and 28120.2315 for version 26H1 via the Beta and Experimental channels in the Windows Insider Program. These flights introduce new features and improvements for existing experiences.

According to the official notes, Windows 11 build 28020.2308 (Beta) is a small maintenance update focused on stability rather than new features.

It introduces general bug fixes and under-the-hood improvements to enhance overall system reliability. The most notable change is an update to the inbox HD Audio driver, which improves its stability and reduces potential audio-related issues across supported hardware configurations.

In addition, build 28120.2315 is rolling out in the Experimental channel and follows the same maintenance-first approach, but includes slightly broader refinements.

It improves the reliability of the inbox HD Audio driver, continuing the effort to stabilize system audio handling. In addition, accessibility receives a refinement where live captions now respond more quickly to style changes, immediately redrawing when settings are adjusted, and showing a sample caption when no active captions are present.

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The rest of the update focuses on small bug fixes and incremental polish across the operating system.

Download Windows 11 update 26300.8497

To download and install these Windows 11 builds, enroll your Devices in the Experimental or Beta Channels 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.

About the author

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].

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