Proxy definitions are authoritative
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Server 2012, Windows 8 or Windows RT
Path in the GPO console
Computer Configuration\Administrative Templates\Network\Network Isolation Description
This setting does not apply to desktop apps. Turns off Windows Network Isolation's automatic proxy discovery in the domain corporate environment. If you enable this policy setting, it turns off Windows Network Isolation's automatic proxy discovery in the domain corporate environment. Only proxies configured with Group Policy are authoritative. This applies to both Internet and intranet proxies. If you disable or do not configure this policy setting, Windows Network Isolation attempts to automatically discover your proxy server addresses. For more information see: http://go.microsoft.com/fwlink/p/?LinkId=234043
Registry
HKLM
SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation Value name: DProxiesAuthoritive
Enabled: DProxiesAuthoritive = 1
Disabled: DProxiesAuthoritive = 0
MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseProxyServersAreAuthoritative Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
CSP values
-
1- Enable. -
0 (Default)- Disable.
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. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Proxy definitions are authoritative
; State: Enabled
; Supported on: At least Windows Server 2012, Windows 8 or Windows RT
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation]
"DProxiesAuthoritive"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DProxiesAuthoritive' -Value 1 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseProxyServersAreAuthoritative
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DProxiesAuthoritive' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DProxiesAuthoritive' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
# 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: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DProxiesAuthoritive' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Proxy definitions are authoritative
# State: Enabled
# Supported on: At least Windows Server 2012, Windows 8 or Windows RT
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'DProxiesAuthoritive' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.