Internet 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 Internet proxy server IP addresses. These addresses are categorized as Internet by Windows Network Isolation and are accessible to apps that have the Internet Client or Internet Client/Server capabilities. If you enable this policy setting, apps on proxied networks can access the Internet without relying on the Private Network capability. However, in most situations Windows Network Isolation will be able to correctly discover proxies. By default, any proxies configured with this setting are merged with proxies that are auto-discovered. To make this policy configuration the sole list of allowed proxies, enable the "Proxy definitions are authoritative" setting. If you disable or do not configure this policy setting, apps will use the Internet proxies auto-discovered by Windows Network Isolation. 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
SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseProxyServers 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: Internet 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]
"DomainProxies"=""More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Internet 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 'DomainProxies' -Value '' -Type StringIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/NetworkIsolation/EnterpriseProxyServers
Data type: String
Value:
<enabled/>
<data id="WF_NetIsolation_Domain_ProxiesBox" value=""/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Internet 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DomainProxies' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Internet 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 'DomainProxies' -Value '' -Type StringSCCM scripts
# Exported from gporais.com
# Policy: Internet 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: Internet 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\NetworkIsolation' -Name 'DomainProxies' -Expected '' -Kind String)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Internet 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 'DomainProxies' -Value '' -Type StringBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.