Set the IPv6 route-probe address for PAC scripts
Verified with Microsoft Edge 154.0.4258.53 — updated on September 15, 2026 Supported on: Microsoft Edge version 153, Windows 7 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Microsoft Edge\Proxy server User Configuration\Administrative Templates\Microsoft Edge\Proxy server Registry
Software\Policies\Microsoft\Edge Software\Policies\Microsoft\Edge Description
This policy sets the IPv6 destination that Microsoft Edge uses to determine the local network address or addresses returned to PAC scripts by the myIpAddress() and myIpAddressEx() helper functions. The route probe sends no application data. This policy applies only when Microsoft Edge uses its built-in proxy resolver to evaluate PAC scripts. It doesn't apply when a native or system resolver is used. If you configure this policy, set it to a valid IPv6 address literal. Host names, malformed values, IPv4 addresses, loopback addresses, link-local addresses, and multicast addresses are rejected. IPv4-mapped IPv6 addresses and the unspecified address are also rejected. Private addresses are supported. If you don't configure this policy or configure it with an empty string, Microsoft Edge uses its built-in default IPv6 destination. The built-in destination can change between versions. A browser restart is required for changes to take effect. Example value: 2001:db8::1
Export Builder
BETAConfigure the state, scope and options, then generate .reg, PowerShell, Intune and SCCM outputs — or add the setting to a multi-setting collection.
These exports write the registry — this is not a managed GPO. ⓘ
Applying both scopes creates an ambiguous configuration (computer takes precedence over user). Only do this intentionally.
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Set the IPv6 route-probe address for PAC scripts
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge version 153, Windows 7 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge]
"PacMyIpAddressIPv6ProbeAddress"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PacMyIpAddressIPv6ProbeAddress' -Value '' -Type StringIntune XML
No direct Policy CSP / OMA-URI mapping for this policy. Use the Intune Remediation tab, or ingest the ADMX in Intune.Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'PacMyIpAddressIPv6ProbeAddress' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PacMyIpAddressIPv6ProbeAddress' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
# SCCM Configuration Item guidance:
# Create a Configuration Item of type "Setting: Script".
# Discovery script: use the Detection script below.
# Remediation script: use the Remediation script below.
# Compliance rule: the Discovery script output equals 'Compliant'.
# === Detection script ===
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
function Test-RegistryValue {
param(
[Parameter(Mandatory = $true)][string]$Path,
[Parameter(Mandatory = $true)][string]$Name,
[object]$Expected,
[ValidateSet('String', 'DWord', 'MultiString')][string]$Kind = 'String',
[switch]$Absent
)
try {
$item = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction Stop
} catch {
return $Absent.IsPresent
}
if ($Absent.IsPresent) { return $false }
$actual = $item.$Name
if ($Kind -eq 'DWord') { return ([int64]$actual) -eq ([int64]$Expected) }
if ($Kind -eq 'MultiString') {
$actualValues = @($actual)
$expectedValues = @($Expected)
if ($actualValues.Count -ne $expectedValues.Count) { return $false }
for ($i = 0; $i -lt $expectedValues.Count; $i++) {
if ([string]$actualValues[$i] -ne [string]$expectedValues[$i]) { return $false }
}
return $true
}
return [string]$actual -eq [string]$Expected
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'PacMyIpAddressIPv6ProbeAddress' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Set the IPv6 route-probe address for PAC scripts
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 153, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PacMyIpAddressIPv6ProbeAddress' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.