Best effort service type
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
Path in the GPO console
Computer Configuration\Administrative Templates\Network\QoS Packet Scheduler\DSCP value of non-conforming packets Description
Specifies an alternate Layer-3 Differentiated Services Code Point (DSCP) value for packets with the Best Effort service type (ServiceTypeBestEffort). The Packet Scheduler inserts the corresponding DSCP value in the IP header of the packets. This setting applies only to packets that do not conform to the flow specification. If you enable this setting, you can change the default DSCP value associated with the Best Effort service type. If you disable this setting, the system uses the default DSCP value of 0. Important: If the DSCP value for this service type is specified in the registry for a particular network adapter, this setting is ignored when configuring that network adapter.
Registry
HKLM
Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_QOS/QosServiceTypeBestEffort_NC 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: Best effort service type
; State: Enabled
; Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming]
"ServiceTypeBestEffort"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ServiceTypeBestEffort' -Value 0 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_QOS/QosServiceTypeBestEffort_NC
Data type: String
Value:
<enabled/>
<data id="QosDSCPValue" value="0"/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming' -Name 'ServiceTypeBestEffort' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ServiceTypeBestEffort' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
# 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: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming' -Name 'ServiceTypeBestEffort' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Best effort service type
# State: Enabled
# Supported on: At least Windows Server 2003 operating systems or Windows XP Professional
$path = 'HKLM:\Software\Policies\Microsoft\Windows\Psched\DiffservByteMappingNonConforming'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'ServiceTypeBestEffort' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.