Set tab process growth: registry value TabProcGrowthUserHKCU\Software\Policies\Microsoft\Internet Explorer\Main

Policy ID: TabProcGrowth
Scope: Computer Configuration, User Configuration
Supported on: At least Internet Explorer 8.0
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Windows Components › Internet Explorer

Registry

TabProcGrowth

REG_SZUserComputer

…\Software\Policies\Microsoft\Internet Explorer\MainHKCU\Software\Policies\Microsoft\Internet Explorer\Main Current key
HKLM\Software\Policies\Microsoft\Internet Explorer\Main

Enabled value: Depends on the option value
Element: Tab Process Growth
Value type: REG_SZ
Required: true

Apply with .reg · CMD · PowerShell

UserPer-account setting

.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Main]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"TabProcGrowth"="<enter value>"

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKCU\Software\Policies\Microsoft\Internet Explorer\Main" /v "TabProcGrowth" /t REG_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKCU:\Software\Policies\Microsoft\Internet Explorer\Main' -Force | Out-Null
New-ItemProperty -Path 'HKCU:\Software\Policies\Microsoft\Internet Explorer\Main' -Name 'TabProcGrowth' -PropertyType String -Value '<enter value>' -Force | Out-Null

ComputerMachine-wide setting

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Main]

; Value names and types follow the ADMX. Replace <enter value> below with your own data
"TabProcGrowth"="<enter value>"

CMD

:: Value names and types follow the ADMX. Replace <enter value> below with your own data

reg add "HKLM\Software\Policies\Microsoft\Internet Explorer\Main" /v "TabProcGrowth" /t REG_SZ /d "<enter value>" /f

PowerShell

# Value names and types follow the ADMX. Replace <enter value> below with your own data

New-Item -Path 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main' -Force | Out-Null
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Internet Explorer\Main' -Name 'TabProcGrowth' -PropertyType String -Value '<enter value>' -Force | Out-Null