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Windows 11 does not offer a numeric taskbar-height field or an icon-width slider. On supported builds, however, you can switch to a smaller taskbar layout, let Windows reduce button sizes when the taskbar is crowded, or enlarge the entire interface through display scaling.

Because Microsoft has introduced these controls gradually, start by checking your Windows build. The available options can differ between retail, preview, and managed PCs.

Check your Windows 11 version and build

Press Windows+R, type winver, and press Enter. The dialog shows your Windows version and OS build.

You can also open Settings > System > About and look under Windows specifications. Windows 11 version 24H2 uses build 26100, while version 25H2 uses build 26200. The exact taskbar controls may still vary within a version because Microsoft rolls out some features gradually.

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To open the taskbar settings page directly, press Windows+R, enter ms-settings:taskbar, and press Enter.

Make the Windows 11 taskbar smaller

On builds that include Microsoft’s newer taskbar controls, use this method:

  1. Right-click an empty part of the taskbar.
  2. Select Taskbar settings.
  3. Expand Taskbar behaviors.
  4. Find Show smaller taskbar buttons.
  5. Choose one of the available options:
Option Result
Always Uses the smaller taskbar button layout continuously.
When taskbar is full Reduces button size automatically when the taskbar runs out of room.
Never Uses the standard taskbar button size.

In newer implementations, Always makes both the taskbar and its icons smaller, giving you a little more vertical screen space. Earlier versions of the feature focused mainly on icon and button scaling, so the result can depend on your build.

Use the newer Taskbar Size control

Some Windows Insider Experimental builds provide a separate Taskbar Size setting instead of, or in addition to, Show smaller taskbar buttons.

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Look under Settings > Personalization > Taskbar > Taskbar behaviors. The control was introduced in Insider Experimental build 26300.8758, released on June 26, 2026. It is not a universal feature of every Windows 11 installation, and its name or location may change before reaching regular releases.

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What to do if “Show smaller taskbar buttons” is missing

The setting is not available on every Windows 11 PC. It may depend on your build, update channel, feature rollout, or organization policy.

  1. Run winver and record the version and OS build.
  2. Open Settings > Windows Update and select Check for updates.
  3. Check whether the computer is running an Insider build or a normal retail release.
  4. If it is a work or school computer, ask whether a taskbar policy is being applied.

Installing the latest update does not guarantee that the option will appear immediately. Microsoft can enable taskbar features gradually, and preview documentation does not mean the same control exists in retail Windows.

Can you make the Windows 11 taskbar taller?

Windows 11 has no supported built-in option for making the taskbar larger than its standard size. The current control provides a smaller or standard layout, not a numeric height setting or a separate “large” option.

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If you need larger taskbar icons, the supported workaround is to increase Windows display scaling:

  1. Open Settings.
  2. Go to System > Display.
  3. Under Scale & layout, open Scale.
  4. Choose a larger value, such as 125% or 150%.

This enlarges more than the taskbar. Text, application windows, menus, and other interface elements will also become larger. It is therefore not an independent taskbar-height control.

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Can you change taskbar icon width or spacing?

No. Windows 11 does not expose separate controls for:

  • The width of each pinned application button
  • Horizontal spacing between taskbar icons
  • Padding around individual icons
  • An exact taskbar-button width in pixels

Show smaller taskbar buttons changes between Windows-defined size behaviors; it does not provide a width or spacing slider.

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You can nevertheless make more horizontal room by changing related taskbar settings:

  • Go to Settings > Personalization > Taskbar > Taskbar behaviors > Taskbar alignment and choose left or centered alignment where available.
  • Under Taskbar items, change Search from a search box to a smaller icon or hide it.
  • Turn off taskbar items you do not use.
  • Use Combine taskbar buttons and hide labels to reduce the space used by open windows, where that option is available.

These settings change how much space the taskbar consumes, not the exact width of each icon. With When taskbar is full selected, Windows can also reduce button size automatically as space becomes limited.

Why the old TaskbarSi Registry tweak should not be your first choice

Older Windows 11 guides often tell you to create this registry value:

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HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerAdvancedTaskbarSi

Those guides commonly assign 0 for small, 1 for default, and 2 for large. This was an undocumented workaround, not a supported Windows setting. It became unreliable after taskbar changes including the February 2023 update KB5022913.

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On current builds, changing the value may do nothing, work only temporarily, or produce inconsistent results between taskbar sections. Common symptoms include a cropped clock or system-tray area, settings reverting after an update, and different behavior after changing display scaling or connecting another monitor.

A registry value can still exist in the profile while the current Windows shell ignores it. For that reason, use the supported Taskbar settings control when your build provides it rather than relying on old TaskbarSi instructions.

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When a work or school PC controls the taskbar

Administrators can enforce the small-button behavior with the Configure Taskbar Small Button Behavior policy. On supported Pro, Enterprise, Education, and IoT Enterprise editions, the policy is located at:

User Configuration
└─ Administrative Templates
   └─ Start Menu and Taskbar
      └─ Configure Taskbar Small Button Behavior

The policy values are:

Value Behavior
0 Always use smaller buttons
1 Use smaller buttons when the taskbar is full
2 Never use smaller buttons
65535 No enforced configuration; the user can choose where supported

When an administrator enables the policy, the user cannot change the corresponding setting in Windows Settings. This can explain why the option is disabled or why a selected value keeps returning after a sign-in or policy refresh. Windows Home does not include the Local Group Policy Editor.

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Windows 11 taskbar sizing: what is possible?

Goal Supported method
Make icons smaller Taskbar settings > Taskbar behaviors > Show smaller taskbar buttons > Always, where available
Automatically shrink icons when crowded Select When taskbar is full
Restore standard sizing Select Never
Make the taskbar shorter Use the smaller-taskbar implementation, if supported by your build
Make the taskbar taller No supported built-in control
Set an exact height in pixels No supported built-in control
Set exact icon width or spacing No supported built-in control
Make the whole interface larger Settings > System > Display > Scale & layout > Scale
Force the behavior on a managed PC Use the Configure Taskbar Small Button Behavior policy

FAQ

How do I make taskbar icons smaller in Windows 11?

Open Settings > Personalization > Taskbar > Taskbar behaviors, expand Show smaller taskbar buttons, and select Always. The option is only available on Windows builds that include the newer taskbar controls.

How do I increase the taskbar size in Windows 11?

There is no supported setting that makes only the taskbar larger. To enlarge the taskbar along with the rest of Windows, open Settings > System > Display and increase Scale to 125% or 150%.

Can I change the width of taskbar icons?

No. Windows 11 does not provide an independent icon-width, button-width, padding, or spacing control. The smaller-button setting uses fixed Windows layouts.

Why can’t I find Show smaller taskbar buttons?

The control depends on your Windows version, OS build, update channel, gradual feature rollout, and possible workplace policies. Check winver, install available Windows updates, and check whether the PC is managed.

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Does the TaskbarSi Registry setting still work?

It is an outdated, undocumented workaround and is unreliable on current Windows 11 builds. It may be ignored, revert after updates, or cause inconsistent taskbar rendering.

The Bottom Line

For a smaller Windows 11 taskbar, use Show smaller taskbar buttons > Always, or choose When taskbar is full if you only want automatic reduction when space runs out. Windows 11 still does not provide supported controls for a taller taskbar, exact pixel height, icon width, or icon spacing. Use display scaling only when enlarging the entire interface is acceptable.

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