Set Teredo Default Qualified: registry value Teredo_DefaultQualifiedComputerHKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition

Policy ID: Teredo_Default_Qualified
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_DefaultQualified

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
Enabled State	Enabled

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)
; Enabled State
"Teredo_DefaultQualified"="Enabled"

CMD

:: Options (use only one)

:: Enabled State
reg add "HKLM\Software\Policies\Microsoft\Windows\TCPIP\v6Transition" /v "Teredo_DefaultQualified" /t REG_SZ /d "Enabled" /f

PowerShell

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

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