Windows 11 Insider Preview Builds 26220.9022 and 28020.2623 finally let Beta-channel testers place the taskbar at the top, left, or right edge of the display, restoring a major customization option that Windows 11 removed at launch. The builds also add a smaller taskbar mode, while Build 26220.9022 fixes an installation rollback tied to error 0xc1900101. As reported by Neowin and Windows Report, the changes are available in the standard Windows 11 Beta channel through Build 26220.9022 and in the Beta (26H1) branch through Build 28020.2623. The setting lives in Settings > Personalization > Taskbar > Taskbar behaviors.
For users with ultrawide monitors, portrait displays, or screen-space-sensitive workflows, the return of vertical taskbars is the practical headline. Microsoft says existing options such as never combining taskbar buttons continue to work in alternate positions, including the labeled-button view that can make a vertically docked taskbar more useful for tracking multiple windows.

Windows 11 Taskbar behaviors settings are open on a desktop monitor, with taskbar position options displayed.The New Controls Still Have Some Edges​

The new Taskbar position selector supports bottom, top, left, and right placement. The smaller taskbar setting reduces taskbar height and icon size, with Start, Search, and the system tray scaling to match.
Not every taskbar feature is ready for every layout. Microsoft says support for touch gestures, the Search box, and Ask Copilot in alternate positions remains in development. Auto-hide and touch-optimized taskbars are not yet supported outside the traditional bottom position, and the smaller taskbar currently works only when docked at the top or bottom.
That limitation matters for tablet and hybrid-device users: the most requested desktop customization is returning, but the newer touch-oriented taskbar behavior has not caught up with it.

Build 26220.9022 Also Targets a Familiar Update Failure​

The standard Beta build addresses an update rollback that could end in error 0xc1900101. That code is commonly associated with driver-related upgrade failures, although Microsoft’s release notes describe this as a specific Beta-channel issue rather than a blanket fix for all instances of the error.
There are two further fixes of interest to managed Windows environments:
  • File History backups to SMB network shares should no longer fail with a misleading invalid-credentials message.
  • Files on DFS mapped drives should no longer be incorrectly treated as internet-originated after a device starts offline and later reconnects, avoiding unexpected Mark of the Web tagging and Preview pane warnings.
Both builds also renew the Windows Insider flight certificate. Insiders need to install this build, or a later one containing the renewed certificate, before the current certificate expires on August 11, 2026, or risk losing the ability to receive future preview flights.

26H1 Adds Touchpad and Update Work​

Build 28020.2623 adds precision-touchpad controls for scroll and zoom speed, accelerated scrolling, and related gesture behavior. Microsoft notes that some complete gesture support in WinUI 3 applications depends on newer Windows App SDK releases.
The 26H1 build also begins Microsoft’s unified-update approach, coordinating driver, .NET, and firmware updates with the monthly quality update to reduce restart prompts. For IT teams, that is potentially more consequential than the taskbar changes—but it is beginning as an Insider rollout, not a production servicing guarantee.
For now, the immediate payoff is simpler: Beta testers can put the Windows 11 taskbar where their workflow needs it, while Microsoft works through the remaining touch and auto-hide gaps.

References​

  1. Primary source: Neowin
    Published: 2026-07-31T18:04:01+00:00
  2. Independent coverage: Windows Report
    Published: 2026-07-31T17:59:07+00:00
  3. Related coverage: blogs.windows.com