Intranet proxy servers for apps
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. A semicolon-separated list of intranet proxy server IP addresses. These addresses are categorized as private by Windows Network Isolation and are accessible to apps that have the Home/Work Networking capability. If you enable this policy setting, it allows an administrator to configure a set of proxies that provide access to intranet resources. If you disable or do not configure this policy setting, Windows Network Isolation attempts to discover proxies and configures them as Internet nodes. This setting should NOT be used to configure Internet proxies. Example: [3efe:3022::1000]; 18.0.0.1; 18.0.0.2 For more information see: http://go.microsoft.com/fwlink/p/?LinkId=234043
Registry
HKLM
SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseInternalProxyServers Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
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: Intranet proxy servers for apps
; State: Enabled
; Supported on: At least Windows Server 2012, Windows 8 or Windows RT
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation]
"DomainLocalProxies"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Intranet proxy servers for apps
# 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 'DomainLocalProxies' -Value '' -Type StringIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseInternalProxyServers
Data type: String
Value:
<enabled/>
<data id="WF_NetIsolation_Intranet_ProxiesBox" value=""/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Intranet proxy servers for apps
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DomainLocalProxies' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Intranet proxy servers for apps
# 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 'DomainLocalProxies' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Intranet proxy servers for apps
# 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: Intranet proxy servers for apps
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DomainLocalProxies' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Intranet proxy servers for apps
# 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 'DomainLocalProxies' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.