Windows 11 version 26H2 now available in the Release Preview Channel

Key Points

Windows 11 version 26H2 (Build 26300.9278) is now available to preview in the Release Preview Channel
It is delivered as an enablement package (eKB), sharing the same servicing branch and core features as Windows 11 versions 24H2 and 25H2
For commercial devices, the update enables experiences such as Windows settings backup, taskbar-specific app actions, and select File Explorer enhancements that were previously off by default

What is changing

According to the Windows Blog (blogs.windows.com), Windows 11, version 26H2 is now available for testing. The update carries Build 26300.9278 and appears in the Release Preview Channel. It is delivered as an enablement package (eKB), which means it uses the same servicing branch as versions 24H2 and 25H2. Many of the features, such as Windows settings backup, have already been rolled out in monthly updates.

Because it is an enablement package, Windows 11 version 26H2 shares core code with the 24H2 and 25H2 releases. This means improvements like Windows settings backup, app-specific actions from the taskbar, and certain File Explorer tweaks are already familiar to many users. Commercial customers will see these features enabled by default on managed devices.

Why it matters

This update matters most to IT admins and commercial customers who manage fleets of PCs. They can now deploy the update via WSUS or Intune to validate compatibility and settings before the broader rollout later this year. For most regular users, the change is still limited to the Insider program at this stage.

For Windows Insiders, the practical takeaway is to open Settings, go to Windows Update, and choose to download and install the new build. After installing, you will continue to receive the usual monthly patches through Windows Update. Your feedback helps Microsoft fine‑tune the final release.