Builds 28120.2912 and 28020.2904 for Windows 11 26H1 out with new features – Beta and Experimental

Windows 11 26H1 gets a pair of maintenance-focused builds that fix annoying input issues while the company tracks an EAC launch error.

Windows 11 build 28120.2912 and 28020.2904
Windows 11 build 28120.2912 and 28020.2904 / Image: Mauro Huculuak
  • Builds 28020.2904 and 28120.2912 are rolling out to the Beta and Experimental channels for Windows 11 version 26H1.
  • Both builds include similar fixes and improvements, but in the Experimental channel, Microsoft is tracking a known gaming issue.

Microsoft has released Windows 11 Insider Preview builds 28020.2904 and 28120.2912 for version 26H1 via the Beta and Experimental channels in the Windows Insider Program. These flights introduce improvements for existing features.

According to the official notes (Beta) and Experimental, Windows 11 builds 28020.2904 (Beta) and 28120.2912 (Experimental) introduce most of the same improvements.

For example, these updates fix an issue that prevented touchpad zoom gestures from working in certain apps after recent builds. Only on build 28120.2912, it also addresses a problem where the mouse cursor could move in the wrong direction on portrait-oriented monitors.

However, Microsoft is also tracking a known gaming issue in build 28120.2912. Some games that use Easy Anti-Cheat (EAC) may fail to launch and display the error 0xc000007b. Microsoft says it is working on a fix and expects to resolve the problem in the next build.

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Overall, builds 28120.2912 and 28020.2904 are a maintenance-focused release for Windows 11 26H1 testers, with the main improvements centered on touchpad and mouse behavior.

Download Windows 11 update previews

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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