Configure Slow link speed

ComputerNative Intune settingPol_SlowLinkSpeed

Supported on Windows XP Professional only

23H2 · 1.0

What it does

Configures the threshold value at which Offline Files considers a network connection to be "slow". Any network speed below this value is considered to be slow. When a connection is considered slow, Offline Files automatically adjust its behavior to avoid excessive synchronization traffic and will not automatically reconnect to a server when the presence of a server is detected. If you enable this setting, you can configure the threshold value that will be used to determine a slow network connection. If this setting is disabled or not configured, the default threshold value of 64,000 bps is used to determine if a network connection is considered to be slow. Note: Use the following formula when entering the slow link value: [ bps / 100]. For example, if you want to set a threshold value of 128,000 bps, enter a value of 1280.

What it writes

Hive: HKEY_LOCAL_MACHINE
Registry key: Software\Policies\Microsoft\Windows\NetCache

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_OfflineFiles/Pol_SlowLinkSpeedADMX_OfflineFiles 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.

Options

Option	Type	Registry value	Allowed values
ValueDefault: 640	Number	`SlowLinkSpeed`	0 to 100000000

Configure and deploy

Choose a state and the option values; 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\Software\Policies\Microsoft\Windows\NetCache]
"SlowLinkSpeed"=dword:00000280

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: Configure Slow link speed
# Name: Pol_SlowLinkSpeed
# Scope: Machine
# State: Enabled
# Source: OfflineFiles.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetCache' -Name 'SlowLinkSpeed' -PropertyType 'DWord' -Value 640

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_OfflineFiles/Pol_SlowLinkSpeed

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_OfflineFiles/Pol_SlowLinkSpeed</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;
&lt;data id="Lbl_SlowLinkSpeedSpin" value="640"/&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: Configure Slow link speed
# Name: Pol_SlowLinkSpeed
# Scope: Machine
# State: Enabled
# Source: OfflineFiles.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetCache' -Name 'SlowLinkSpeed' -Kind 'DWord' -Expected 640
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetCache\SlowLinkSpeed') | 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: Configure Slow link speed
# Name: Pol_SlowLinkSpeed
# Scope: Machine
# State: Enabled
# Source: OfflineFiles.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\NetCache' -Name 'SlowLinkSpeed' -PropertyType 'DWord' -Value 640

History 3 retained releases

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

2 later releases left it unchanged.

Template

Internal name: Pol_SlowLinkSpeed
Namespace: Microsoft.Policies.OfflineFiles
Template file: OfflineFiles.admx
Release: Windows 11 23H2 · 1.0 · file set d784d0ea5f14a680…

Definition, editor controls and support

Definition

<policy class="Machine" displayName="$(string.Pol_SlowLinkSpeed)" explainText="$(string.Pol_SlowLinkSpeed_Help)" key="Software\Policies\Microsoft\Windows\NetCache" name="Pol_SlowLinkSpeed" presentation="$(presentation.Pol_SlowLinkSpeed)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.OfflineFiles:Cat_OfflineFiles" />
      <supportedOn ref="Microsoft.Policies.Windows:SUPPORTED_WindowsXPOnly" />
      <elements>
        <decimal id="Lbl_SlowLinkSpeedSpin" maxValue="100000000" valueName="SlowLinkSpeed" />
      </elements>
    </policy>

Editor controls

<presentation id="Pol_SlowLinkSpeed" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <text>Value entered is [ bps / 100 ] --&gt; Example: 128,000bps, enter 1280</text>
        <decimalTextBox defaultValue="640" refId="Lbl_SlowLinkSpeedSpin" spinStep="10">Value: </decimalTextBox>
      </presentation>

Supported platforms and category

Microsoft.Policies.OfflineFiles:category:Cat_OfflineFiles
<category displayName="$(string.Cat_OfflineFiles)" name="Cat_OfflineFiles" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:Network" />
    </category>
Microsoft.Policies.Windows:category:Network
<category displayName="$(string.Network)" explainText="$(string.Network_Help)" name="Network" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.Windows:definition:SUPPORTED_WindowsXPOnly
<definition displayName="$(string.SUPPORTED_WindowsXPOnly)" name="SUPPORTED_WindowsXPOnly" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <reference ref="Microsoft.Policies.Products:MicrosoftWindowsXP" />
        </or>
      </definition>
Microsoft.Policies.Windows:unresolved:Microsoft.Policies.Products:MicrosoftWindowsXP
<unresolved reference="Microsoft.Policies.Products:MicrosoftWindowsXP" />
Microsoft.Policies.OfflineFiles:category:Cat_OfflineFiles
<category displayName="$(string.Cat_OfflineFiles)" name="Cat_OfflineFiles" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:Network" />
    </category>
<strings><string id="Microsoft.Policies.OfflineFiles:Cat_OfflineFiles">Offline Files</string></strings>
Microsoft.Policies.Windows:category:Network
<category displayName="$(string.Network)" explainText="$(string.Network_Help)" name="Network" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.Windows:Network">Network</string><string id="Microsoft.Policies.Windows:Network_Help">Allows configuration of components of the operating system used by a client computer to connect to a network. This includes DNS settings and Offline Files.</string></strings>
Microsoft.Policies.Windows:definition:SUPPORTED_WindowsXPOnly
<definition displayName="$(string.SUPPORTED_WindowsXPOnly)" name="SUPPORTED_WindowsXPOnly" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <or>
          <reference ref="Microsoft.Policies.Products:MicrosoftWindowsXP" />
        </or>
      </definition>
<strings><string id="Microsoft.Policies.Windows:SUPPORTED_WindowsXPOnly">Windows XP Professional only</string></strings>