Microsoft has pushed a new Windows 11 Beta Preview build, 26220.9492, to the Windows Preview SDK channel. As with most incremental Beta releases, this update bundles a couple of targeted fixes rather than a splashy new feature set, and it’s the sort of update that keeps the Beta Preview ring moving forward between the larger drops you’ll see in the chancier Dev channel.
Live Captions gets an improvement
The main change in build 26220.9492 is a tweak to Live Captions, the accessibility feature that transcribes audio playing on your PC in real time. Live Captions turns spoken audio and media playback into on-screen text, which helps deaf and hard-of-hearing users, people working in quiet rooms, and anyone who wants a running transcript of a meeting or video.
Microsoft’s changelog for this build is thin on specifics, so the exact nature of the improvement hasn’t been spelled out in detail. What we do know is that the update ships a refinement to how Live Captions processes and displays captions, rather than a brand-new capability. If you’ve noticed caption timing or accuracy drift in earlier builds, this is the kind of quiet fix that’s meant to smooth things out.
Live Captions has been part of Windows 11 since its early preview days and became generally available in a stable release in 2023. It works across apps by routing system audio through its local transcription engine, and you can toggle it on with the Win + Ctrl + L shortcut. Because it runs on your machine rather than in the cloud, it’s one of the more privacy-friendly captioning options available on a PC.
Hyper-V issues are fixed
The second headline item in this release is a set of fixes for Hyper-V, Microsoft’s virtualization hypervisor built into Windows 11 Pro, Enterprise, and Education editions. Hyper-V lets you run virtual machines alongside your host OS, and it also powers features like Windows Sandbox and the Android on Windows subsystem.
Again, the changelog doesn’t list the precise bugs being corrected, but the phrasing—fixing “issues”—suggests that some Insiders were hitting problems with virtual machines running on this build. That could range from VMs failing to start, to networking or storage quirks inside a guest, to hypervisor conflicts with third-party software. Whatever the exact cause, the fix is intended to restore stable VM performance on the affected builds.
For IT administrators and power users who rely on Hyper-V for lab environments, this matters because a hypervisor that drops or misbehaves can mean lost work or interrupted testing cycles. Getting the fix out through the Beta Preview channel is the right path here: Insiders absorb the rough edges, and by the time 26220.9492 reaches the Release Preview and stable channels, the fix should be baked in for everyone.
What this means for you
If you’re running the Windows 11 Beta Preview build as an Insider, you’ll get this update automatically through the Windows Insider Program once the download completes. The Beta Preview channel is the most “production-like” of the Insider rings, sitting just below the chancier Dev channel, so it’s a reasonable place to test features before they go broad.
That said, Beta Preview isn’t gold. You should still expect the occasional rough edge, and Microsoft doesn’t guarantee stability the way it does for the slower Release Preview or stable channels. If Live Captions or Hyper-V suddenly misbehave after installing 26220.9492, that’s normal for the ring—roll it back via Settings > Windows Insider Program > Roll back if you need to.
For the everyday Windows 11 user not yet on the Insider track, there’s nothing to rush about. These fixes will trickle down through the servicing channels over the coming weeks, and you’ll see them in your cumulative update when the build matures. For now, the changes are confined to Insiders testing on the Beta Preview ring.
How to get it
To install build 26220.9492, you need to be enroled in the Windows Insider Program and opted into the Beta Preview channel. Open Settings > Windows Insider Program, select the Beta Preview ring, and trigger a check with Settings > System > Windows Update > Download and install (or Check now).
If your device is already on the Beta Preview ring, the build should arrive on its own. You can confirm you’re running 26220.9492 by opening Settings > System > About and checking the version and build number under Windows 11 specifications. For anyone still on the Dev channel or Release Preview, you’ll need to switch rings—though switching can reset your device, so back up your data first.
Source: Neowin
Over to you: Are you staying on the Beta Preview ring, or have you moved over to the slower Release Preview channel?
