Set Teredo State: registry value Teredo_StateComputerHKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition

Policy ID: Teredo_State
Scope: Computer Configuration
Supported on: At least Windows Server 2008 R2 or Windows 7
Source: Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
Category: Network › TCPIP Settings › IPv6 Transition Technologies

Registry

Teredo_State

REG_SZComputer

HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition Current key

Enabled value: Depends on the option value
Element: Select from the following states:

Options
Item	Stored value
Default State	Default
Disabled State	Disabled
Client	Client
Enterprise Client	Enterprise Client

Apply with .reg · CMD · PowerShell

.reg

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\TCPIP\v6Transition]

; Options (use only one)
; Default State
"Teredo_State"="Default"
; Disabled State
"Teredo_State"="Disabled"
; Client
"Teredo_State"="Client"
; Enterprise Client
"Teredo_State"="Enterprise Client"

CMD

:: Options (use only one)

:: Default State
reg add "HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition" /v "Teredo_State" /t REG_SZ /d "Default" /f
:: Disabled State
reg add "HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition" /v "Teredo_State" /t REG_SZ /d "Disabled" /f
:: Client
reg add "HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition" /v "Teredo_State" /t REG_SZ /d "Client" /f
:: Enterprise Client
reg add "HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition" /v "Teredo_State" /t REG_SZ /d "Enterprise Client" /f

PowerShell

# Common: create the key
New-Item -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition' -Force | Out-Null

# Options (use only one)
# Default State
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition' -Name 'Teredo_State' -PropertyType String -Value 'Default' -Force | Out-Null
# Disabled State
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition' -Name 'Teredo_State' -PropertyType String -Value 'Disabled' -Force | Out-Null
# Client
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition' -Name 'Teredo_State' -PropertyType String -Value 'Client' -Force | Out-Null
# Enterprise Client
New-ItemProperty -Path 'HKLM:\Software\Policies\Microsoft\Windows\TCPIP\v6Transition' -Name 'Teredo_State' -PropertyType String -Value 'Enterprise Client' -Force | Out-Null