Windows 10’s rounded, floating-style taskbar Jump List was a preview-era feature, not a universally supported setting. Windows Central reported on 26 April 2021 that it appeared after hidden shell options were enabled. The report did not establish a reliable registry tweak that works on current Windows installations. If you want the look, treat it as a historical experiment; for practical customization today, use Windows’ documented taskbar controls instead.
What the hidden Sun Valley settings changed
In April 2021, Windows Central showed a rounded taskbar Jump List— the menu that appears when you right-click an app on the taskbar. The publication said the menu appeared after toggling hidden settings within Windows 10 and described it as resembling designs Microsoft planned to ship. It also noted that the rounded Jump List appeared only after enabling options through the shell experience. Windows Central’s 26 April 2021 report documents that preview-era behavior.
This was a glimpse of shell UI under development, not a supported feature switch promised for every Windows 10 edition or build. The report does not provide a dependable, current set of steps or establish that the same flags remain available. A rounded menu on one preview build therefore does not mean the tweak is safe or functional on a different installation.
Can you still enable the floating Jump List?
There is no verified universal method in the cited report for enabling the floating Jump List on current Windows 10 systems. Because the behavior depended on hidden shell settings and the Windows build, copying an old registry value or downloading a registry file from an unverified source may do nothing—or change unrelated behavior. The available evidence supports describing what appeared in a 2021 preview, not recommending a present-day registry recipe.
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Windows does provide supported policy and registry controls for some Start and taskbar behaviors, but those controls are distinct from the hidden Sun Valley visual experiment. Microsoft’s Start Menu ADMX policy documentation lists Windows 10 version 2004, 20H2, and 21H1 applicability for several policies. That policy coverage does not establish that the rounded Jump List can be enabled through those settings.
How the alternatives compare
| Option | Build support | Visual change | Scope and reversibility | Risk |
|---|---|---|---|---|
| Hidden Sun Valley shell settings reported in 2021 | Preview- and build-dependent; current availability is not established by the 2021 report. | Rounded, floating-style taskbar Jump List and related shell UI. | Specific scope and a supported rollback procedure are not established in the report. | Undocumented shell changes may not work consistently; registry edits can cause serious problems. |
| Microsoft-documented Start/taskbar policies | Varies by policy and edition; Microsoft’s ADMX page lists applicability to Windows 10 2004, 20H2, and 21H1 for several controls. | Changes documented menu or taskbar behavior; the cited documentation does not identify these as a way to reproduce the rounded Jump List. | Microsoft documents user- or device-scoped mappings for policies; applicable controls depend on the policy and edition. | Changes can affect users or devices according to policy scope; follow the specific policy documentation. |
| Current taskbar settings and built-in controls | Use the controls available in your installed Windows version. | Adjusts supported taskbar behavior and provides access to overflow and Quick Settings, rather than reproducing the 2021 Jump List design. | Configured through Windows settings and the taskbar interface. | Uses documented Windows controls rather than undocumented shell flags. |
Use supported taskbar controls instead
If your goal is to manage taskbar behavior rather than reproduce a preview design, open Taskbar settings and use the available controls for the taskbar and its overflow area. The overflow area is where Windows places icons that are not shown directly on the taskbar. For quick access to common system controls, Microsoft documents Quick Settings and the Windows+A shortcut. Available controls include network, volume, battery, and accessibility functions; see Microsoft’s Quick Settings guidance for the documented interface.
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If you choose to inspect the registry
Registry Editor is not a safe substitute for a supported feature toggle. Microsoft describes it as a tool for viewing and modifying the system registry and warns that improper changes can cause instability, application errors, or prevent Windows from starting. Read Microsoft’s registry backup and restore guidance before making any change.
- Search Windows for Registry Editor, or press Windows+R, type
regedit, and press Enter. - Back up the registry before editing, and proceed only if you understand the specific value and its effect.
- Do not apply an unverified registry file or assume an old preview tweak is appropriate for your build.
For supported policy changes, use the documentation for the exact policy and Windows edition rather than inferring a setting from an unrelated registry mapping.
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