Configure multicast DNS (mDNS) protocol
Verified with Windows 11 25H2 — updated on July 10, 2026
Supported on: At least Windows Server 2016, Windows 10 Version 1703
Path in the GPO console
Computer Configuration\Administrative Templates\Network\DNS Client Description
Specifies if the DNS client will perform name resolution over mDNS. If you enable this policy, the DNS client will use mDNS protocol. If you disable this policy setting, or if you do not configure this policy setting, the DNS client will use locally configured settings.
Registry
HKLM
Software\Policies\Microsoft\Windows NT\DNSClient Value name: EnableMDNS
Enabled: EnableMDNS = 1
Disabled: EnableMDNS = 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: Configure multicast DNS (mDNS) protocol
; State: Enabled
; Supported on: At least Windows Server 2016, Windows 10 Version 1703
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows NT\DNSClient]
"EnableMDNS"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
$path = 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableMDNS' -Value 1 -Type DWordIntune 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: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Name 'EnableMDNS' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
$path = 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableMDNS' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
# 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: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient' -Name 'EnableMDNS' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure multicast DNS (mDNS) protocol
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1703
$path = 'HKLM:\Software\Policies\Microsoft\Windows NT\DNSClient'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableMDNS' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.