Set Window Scaling Heuristics State

ComputerNative Intune settingWindows_Scaling_Heuristics_State

Supported on Windows Server 2008, Windows 7, Windows Vista, and Windows 10

25H2 · 1.0

What it does

This policy setting allows you to configure Window Scaling Heuristics. Window Scaling Heuristics is an algorithm to identify connectivity and throughput problems caused by many Firewalls and other middle boxes that don't interpret Window Scaling option correctly. If you do not configure this policy setting, the local host settings are used. If you enable this policy setting, Window Scaling Heuristics will be enabled and system will try to identify connectivity and throughput problems and take appropriate measures. If you disable this policy setting, Window Scaling Heuristics will be disabled and system will not try to identify connectivity and throughput problems casued by Firewalls or other middle boxes.

What it writes

Hive: HKEY_LOCAL_MACHINE
Registry key: System\CurrentControlSet\Services\Tcpip\Parameters
Value name: EnableWsd
When enabled: DWORD 1
When disabled: DWORD 0

Why it needs changes for Intune

Policy references a Windows supportedOn definition.
ADMX-INTUNE-WINDOWS-SUPPORTEDON-REFERENCE

In Intune

Native Intune setting: Yes — Policy CSP

./Device/Vendor/MSFT/Policy/Config/ADMX_tcpip/Windows_Scaling_Heuristics_StateADMX_tcpip on Microsoft LearnADMX-backed: Windows ships this template, so it is set with the template's own values, without an import.Windows builds listed: 10.0.22000, 10.0.19043.1202, 10.0.19042.1202, 10.0.19041.1202.

From Microsoft's Policy CSP DDF files (DDF v2 Files, February 2026), read 18 Oct 2026.

Configure and deploy

Choose a state; the output below is generated from the template for exactly that.

Enabled · Computer · template defaults

Registry file (.reg)

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters]
"EnableWsd"=dword:00000001

PowerShell

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Set Window Scaling Heuristics State
# Name: Windows_Scaling_Heuristics_State
# Scope: Machine
# State: Enabled
# Source: tcpip.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'EnableWsd' -PropertyType 'DWord' -Value 1

These deployment candidates come from the ADMX template; they are separate from the native CSP mapping above.

The OMA-URI is an inferred ADMX-backed Policy CSP candidate derived from the source ADMX file name and policy name.
Some Microsoft policies use built-in Policy CSP pages whose area names don't match the ADMX file name, so verify the candidate against Microsoft Learn before deployment.

ADMX profile candidate (OMA-URI)

./Device/Vendor/MSFT/Policy/Config/ADMX_tcpip/Windows_Scaling_Heuristics_State

ADMX SyncML candidate

<SyncML xmlns="SYNCML:SYNCML1.2">
  <SyncBody>
    <Replace>
      <CmdID>1</CmdID>
      <Item>
        <Meta>
          <Format>chr</Format>
          <Type>text/plain</Type>
        </Meta>
        <Target>
          <LocURI>./Device/Vendor/MSFT/Policy/Config/ADMX_tcpip/Windows_Scaling_Heuristics_State</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;</Data>
      </Item>
    </Replace>
    <Final/>
  </SyncBody>
</SyncML>

Intune remediation scripts

Detection

$ErrorActionPreference = 'Stop'
$reasons = [System.Collections.Generic.List[string]]::new()

function Test-RegistryValueExists {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    return $null -ne (Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue)
}

function Test-RegistryValueEquals {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $Kind,
        [Parameter(Mandatory = $true)][object] $Expected
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return $false
    }

    $valueObject = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue
    if ($null -eq $valueObject) {
        return $false
    }

    $actual = $valueObject.$Name
    switch ($Kind) {
        'String' { return [string]$actual -ceq [string]$Expected }
        'ExpandString' { return [string]$actual -ceq [string]$Expected }
        'DWord' { return [uint32]$actual -eq [uint32]$Expected }
        'QWord' { return [uint64]$actual -eq [uint64]$Expected }
        'MultiString' {
            $actualArray = @($actual)
            $expectedArray = @($Expected)
            if ($actualArray.Count -ne $expectedArray.Count) { return $false }
            for ($index = 0; $index -lt $actualArray.Count; $index++) {
                if ([string]$actualArray[$index] -cne [string]$expectedArray[$index]) { return $false }
            }
            return $true
        }
        'Binary' {
            $actualArray = [byte[]]$actual
            $expectedArray = [byte[]]$Expected
            if ($actualArray.Length -ne $expectedArray.Length) { return $false }
            for ($index = 0; $index -lt $actualArray.Length; $index++) {
                if ($actualArray[$index] -ne $expectedArray[$index]) { return $false }
            }
            return $true
        }
        default { return [string]$actual -ceq [string]$Expected }
    }
}

# Policy: Set Window Scaling Heuristics State
# Name: Windows_Scaling_Heuristics_State
# Scope: Machine
# State: Enabled
# Source: tcpip.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'EnableWsd' -Kind 'DWord' -Expected 1
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters\EnableWsd') | Out-Null
}

if ($reasons.Count -eq 0) {
    Write-Output 'Compliant'
    exit 0
}

$reasons | ForEach-Object { Write-Output $_ }
exit 1

Remediation

$ErrorActionPreference = 'Stop'

function Set-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name,
        [Parameter(Mandatory = $true)][string] $PropertyType,
        [Parameter(Mandatory = $true)][object] $Value
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        New-Item -Path $Path -Force | Out-Null
    }

    New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}

function Remove-RegistryValue {
    param(
        [Parameter(Mandatory = $true)][string] $Path,
        [Parameter(Mandatory = $true)][string] $Name
    )

    if (Test-Path -LiteralPath $Path) {
        Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
    }
}

function Clear-RegistryKeyValues {
    param(
        [Parameter(Mandatory = $true)][string] $Path
    )

    if (-not (Test-Path -LiteralPath $Path)) {
        return
    }

    foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
        Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
    }
}

# Policy: Set Window Scaling Heuristics State
# Name: Windows_Scaling_Heuristics_State
# Scope: Machine
# State: Enabled
# Source: tcpip.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters' -Name 'EnableWsd' -PropertyType 'DWord' -Value 1

History 5 retained releases

22H2 · 1.015 Jul 2024
- Already present in the first release ChangeIntel keeps.

4 later releases left it unchanged.

Template

Internal name: Windows_Scaling_Heuristics_State
Namespace: Microsoft.Policies.TCPIP
Template file: tcpip.admx
Release: Windows 11 25H2 · 1.0 · file set de4e49983ebd651f…

Definition, editor controls and support

Definition

<policy class="Machine" displayName="$(string.Windows_Scaling_Heuristics_State)" explainText="$(string.Windows_Scaling_Heuristics_Help)" key="System\CurrentControlSet\Services\Tcpip\Parameters" name="Windows_Scaling_Heuristics_State" valueName="EnableWsd" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.TCPIP:Parameters" />
      <supportedOn ref="Microsoft.Policies.Windows:SUPPORTED_Windows7ToVistaAndWindows10" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
    </policy>

Editor controls

Supported platforms and category

Microsoft.Policies.TCPIP:category:Parameters
<category displayName="$(string.Parameters)" name="Parameters" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.TCPIP:TCPIP" />
    </category>
Microsoft.Policies.TCPIP:category:TCPIP
<category displayName="$(string.TCPIP)" name="TCPIP" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:Network" />
    </category>
Microsoft.Policies.Windows:category:Network
<category displayName="$(string.Network)" explainText="$(string.Network_Help)" name="Network" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.Windows:definition:SUPPORTED_Windows7ToVistaAndWindows10
<definition displayName="$(string.SUPPORTED_Windows7ToVistaAndWindows10)" name="SUPPORTED_Windows7ToVistaAndWindows10" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      </definition>
Microsoft.Policies.TCPIP:category:Parameters
<category displayName="$(string.Parameters)" name="Parameters" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.TCPIP:TCPIP" />
    </category>
<strings><string id="Microsoft.Policies.TCPIP:Parameters">Parameters</string></strings>
Microsoft.Policies.TCPIP:category:TCPIP
<category displayName="$(string.TCPIP)" name="TCPIP" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:Network" />
    </category>
<strings><string id="Microsoft.Policies.TCPIP:TCPIP">TCPIP Settings</string></strings>
Microsoft.Policies.Windows:category:Network
<category displayName="$(string.Network)" explainText="$(string.Network_Help)" name="Network" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.Windows:Network">Network</string><string id="Microsoft.Policies.Windows:Network_Help">Allows configuration of components of the operating system used by a client computer to connect to a network. This includes DNS settings and Offline Files.</string></strings>
Microsoft.Policies.Windows:definition:SUPPORTED_Windows7ToVistaAndWindows10
<definition displayName="$(string.SUPPORTED_Windows7ToVistaAndWindows10)" name="SUPPORTED_Windows7ToVistaAndWindows10" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      </definition>
<strings><string id="Microsoft.Policies.Windows:SUPPORTED_Windows7ToVistaAndWindows10">Windows Server 2008, Windows 7, Windows Vista, and Windows 10</string></strings>