Configure Taskbar Small Button Behavior: registry value ConfigureTaskbarSmallButtonBehaviorUserHKCU\Software\Policies\Microsoft\Windows\Explorer

Policy ID
ConfigureTaskbarSmallButtonBehavior
Scope
Computer Configuration, User Configuration
Supported on
At least Windows 11 Pro, Enterprise, or Education with Windows Sandbox
Source
Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category
Start Menu and Taskbar

Registry

ConfigureTaskbarSmallButtonBehavior

REG_DWORDUserComputer
Enabled value
Depends on the option value
Element
Choose when to show smaller taskbar buttons:
Options
ItemStored value
Always0
When taskbar is full1
Never2
Apply with .reg · CMD · PowerShell
UserPer-account setting
.reg
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Explorer]

; Options (use only one)
; Always
"ConfigureTaskbarSmallButtonBehavior"=dword:00000000
; When taskbar is full
"ConfigureTaskbarSmallButtonBehavior"=dword:00000001
; Never
"ConfigureTaskbarSmallButtonBehavior"=dword:00000002
CMD
:: Options (use only one)

:: Always
reg add "HKCU\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 0 /f
:: When taskbar is full
reg add "HKCU\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 1 /f
:: Never
reg add "HKCU\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 2 /f
PowerShell
# Common: create the key
New-Item -Path 'HKCU:\Software\Policies\Microsoft\Windows\Explorer' -Force | Out-Null

# Options (use only one)
# Always
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 0 -Force | Out-Null
# When taskbar is full
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 1 -Force | Out-Null
# Never
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 2 -Force | Out-Null
ComputerMachine-wide setting
.reg
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Explorer]

; Options (use only one)
; Always
"ConfigureTaskbarSmallButtonBehavior"=dword:00000000
; When taskbar is full
"ConfigureTaskbarSmallButtonBehavior"=dword:00000001
; Never
"ConfigureTaskbarSmallButtonBehavior"=dword:00000002
CMD
:: Options (use only one)

:: Always
reg add "HKLM\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 0 /f
:: When taskbar is full
reg add "HKLM\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 1 /f
:: Never
reg add "HKLM\Software\Policies\Microsoft\Windows\Explorer" /v "ConfigureTaskbarSmallButtonBehavior" /t REG_DWORD /d 2 /f
PowerShell
# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\Explorer' -Force | Out-Null

# Options (use only one)
# Always
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 0 -Force | Out-Null
# When taskbar is full
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 1 -Force | Out-Null
# Never
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\Explorer' -Name 'ConfigureTaskbarSmallButtonBehavior' -PropertyType DWord -Value 2 -Force | Out-Null