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Microsoft 365 Apps Group Policy settings

2,420 settings · 5568.1000 · 10 Aug 2026

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Microsoft Outlook 2016 › Account Settings › Exchange › Cached Exchange Mode

Cached Exchange Mode Sync Settings

UserNeeds changes for IntuneL_CachedExchangeModeSyncSlider

Supported on SUPPORTED_Windows7 (defined in the Windows templates)

5568.1000

What it does

This policy setting allows you to configure the amount (by date) of user email Outlook synchronizes locally using Cached Exchange Mode. If you enable this policy setting, you can specify the time-window of email messages that Outlook synchronizes to users' computers. The options you can select are: 3 days, 1 week, 2 weeks, 1 month, 3 months, 6 months, 1 year, 2 years, 3 years, 5 years, and All. If you disable or do not configure this policy setting, Outlook synchronizes the last 12 months of email messages to users' computers.

What it writes

Hive
HKEY_CURRENT_USER
Registry key
software\policies\microsoft\office\16.0\outlook\cached mode
Why it needs changes for Intune
  • Policy references a Windows supportedOn definition.
  • ADMX-INTUNE-WINDOWS-SUPPORTEDON-REFERENCE

Options

OptionTypeRegistry valueAllowed values
Select Cached Exchange Mode sync settings for profilesDefault: One year Drop-down list syncwindowsetting
  • Three days0
  • One week0
  • Two weeks0
  • One month1
  • Three months3
  • Six months6
  • One year12
  • Two years24
  • Three years36
  • Five years60
  • All0

Configure and deploy

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

State
Options used when Enabled

Enabled · User · template defaults

Registry file (.reg)

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode]
"syncwindowsetting"=dword:0000000C
"syncwindowsettingdays"=dword:00000000

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: Cached Exchange Mode Sync Settings
# Name: L_CachedExchangeModeSyncSlider
# Scope: User
# State: Enabled
# Source: outlk16.admx

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsetting' -PropertyType 'DWord' -Value 12

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsettingdays' -PropertyType 'DWord' -Value 0
  • 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)

./User/Vendor/MSFT/Policy/Config/ADMX_outlk16/L_CachedExchangeModeSyncSlider

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>./User/Vendor/MSFT/Policy/Config/ADMX_outlk16/L_CachedExchangeModeSyncSlider</LocURI>
        </Target>
        <Data>&lt;enabled/&gt;
&lt;data id="L_SelectCachedExchangeModeSyncSettings" value="6"/&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: Cached Exchange Mode Sync Settings
# Name: L_CachedExchangeModeSyncSlider
# Scope: User
# State: Enabled
# Source: outlk16.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsetting' -Kind 'DWord' -Expected 12
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode\syncwindowsetting') | Out-Null
}

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsettingdays' -Kind 'DWord' -Expected 0
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode\syncwindowsettingdays') | 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: Cached Exchange Mode Sync Settings
# Name: L_CachedExchangeModeSyncSlider
# Scope: User
# State: Enabled
# Source: outlk16.admx

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsetting' -PropertyType 'DWord' -Value 12

Set-RegistryValue -Path 'Registry::HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\outlook\cached mode' -Name 'syncwindowsettingdays' -PropertyType 'DWord' -Value 0

History 1 retained release

  1. 5568.100010 Aug 2026
    • Already present in the first release ChangeIntel keeps.

Template

Internal name
L_CachedExchangeModeSyncSlider
Namespace
outlk16.Office.Microsoft.Policies.Windows
Template file
outlk16.admx
Release
Microsoft 365 Apps 5568.1000 · file set 8be05d876aae137d…
Definition, editor controls and support

Definition

<policy class="User" displayName="$(string.L_CachedExchangeModeSyncSlider)" explainText="$(string.L_CachedExchangeModeSyncSliderExplainText)" key="software\policies\microsoft\office\16.0\outlook\cached mode" name="L_CachedExchangeModeSyncSlider" presentation="$(presentation.L_CachedExchangeModeSyncSlider)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_CachedExchangeMode" />
      <supportedOn ref="Microsoft.Policies.Windows:SUPPORTED_Windows7" />
      <elements>
        <enum id="L_SelectCachedExchangeModeSyncSettings" valueName="syncwindowsetting">
          <item displayName="$(string.L_SyncSliderThreeDays)">
            <value>
              <decimal value="0" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="3" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderOneWeek)">
            <value>
              <decimal value="0" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="7" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderTwoWeeks)">
            <value>
              <decimal value="0" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="14" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderOneMonth)">
            <value>
              <decimal value="1" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderThreeMonths)">
            <value>
              <decimal value="3" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderSixMonths)">
            <value>
              <decimal value="6" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderOneYear)">
            <value>
              <decimal value="12" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderTwoYears)">
            <value>
              <decimal value="24" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderThreeYears)">
            <value>
              <decimal value="36" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderFiveYears)">
            <value>
              <decimal value="60" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
          <item displayName="$(string.L_SyncSliderAll)">
            <value>
              <decimal value="0" />
            </value>
            <valueList>
              <item key="software\policies\microsoft\office\16.0\outlook\cached mode" valueName="syncwindowsettingdays">
                <value>
                  <decimal value="0" />
                </value>
              </item>
            </valueList>
          </item>
        </enum>
      </elements>
    </policy>

Editor controls

<presentation id="L_CachedExchangeModeSyncSlider" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <dropdownList defaultItem="6" noSort="true" refId="L_SelectCachedExchangeModeSyncSettings">Select Cached Exchange Mode sync settings for profiles</dropdownList>
      </presentation>

Supported platforms and category

outlk16.Office.Microsoft.Policies.Windows:category:L_CachedExchangeMode
<category displayName="$(string.L_CachedExchangeMode)" name="L_CachedExchangeMode" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_Exchangesettings" />
    </category>
outlk16.Office.Microsoft.Policies.Windows:category:L_Exchangesettings
<category displayName="$(string.L_Exchangesettings)" name="L_Exchangesettings" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_ToolsAccounts" />
    </category>
outlk16.Office.Microsoft.Policies.Windows:category:L_MicrosoftOfficeOutlook
<category displayName="$(string.L_MicrosoftOfficeOutlook)" name="L_MicrosoftOfficeOutlook" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
outlk16.Office.Microsoft.Policies.Windows:category:L_ToolsAccounts
<category displayName="$(string.L_ToolsAccounts)" name="L_ToolsAccounts" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_MicrosoftOfficeOutlook" />
    </category>
outlk16.Office.Microsoft.Policies.Windows:unresolved:Microsoft.Policies.Windows:SUPPORTED_Windows7
<unresolved reference="Microsoft.Policies.Windows:SUPPORTED_Windows7" />
outlk16.Office.Microsoft.Policies.Windows:category:L_CachedExchangeMode
<category displayName="$(string.L_CachedExchangeMode)" name="L_CachedExchangeMode" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_Exchangesettings" />
    </category>
<strings><string id="outlk16.Office.Microsoft.Policies.Windows:L_CachedExchangeMode">Cached Exchange Mode</string></strings>
outlk16.Office.Microsoft.Policies.Windows:category:L_Exchangesettings
<category displayName="$(string.L_Exchangesettings)" name="L_Exchangesettings" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_ToolsAccounts" />
    </category>
<strings><string id="outlk16.Office.Microsoft.Policies.Windows:L_Exchangesettings">Exchange</string></strings>
outlk16.Office.Microsoft.Policies.Windows:category:L_MicrosoftOfficeOutlook
<category displayName="$(string.L_MicrosoftOfficeOutlook)" name="L_MicrosoftOfficeOutlook" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="outlk16.Office.Microsoft.Policies.Windows:L_MicrosoftOfficeOutlook">Microsoft Outlook 2016</string></strings>
outlk16.Office.Microsoft.Policies.Windows:category:L_ToolsAccounts
<category displayName="$(string.L_ToolsAccounts)" name="L_ToolsAccounts" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="outlk16.Office.Microsoft.Policies.Windows:L_MicrosoftOfficeOutlook" />
    </category>
<strings><string id="outlk16.Office.Microsoft.Policies.Windows:L_ToolsAccounts">Account Settings</string></strings>
ChangeIntel

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Sources read 19 Oct 15:16 UTC · 257 of 260 readable · 255 fully read · documentation 417/444 current

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