Enable indexing of online delegate mailboxes
Verified with Windows 11 25H2 — updated on July 29, 2026
Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Search Description
Enabling this policy allows indexing of items for online delegate mailboxes on a Microsoft Exchange server. This policy affects only delegate mailboxes that are online. Microsoft Outlook 2007 allows users to cache portions of delegate mailboxes locally (for example, contacts or a calendar). This policy will not affect portions of a delegate mailbox that are cached locally. To have this policy affect all parts of a delegate mailbox, ensure that for Microsoft Outlook 2007 no portions of the delegate mailbox are cached locally. The default behavior for Search is to not index online delegate mailboxes. Disabling this policy will block any indexing of online delegate mailboxes. Online delegate mailboxes are managed separately from online mailboxes. The "Enable Indexing of Uncached Exchange Folders" policy has no effect on online delegate mailboxes. To stop indexing of online mailboxes and online delegate mailboxes you must disable both policies.
Registry
SOFTWARE\Policies\Microsoft\Windows\Windows Search Value name: EnableIndexingDelegateMailboxes
Enabled: EnableIndexingDelegateMailboxes = 1
Disabled: EnableIndexingDelegateMailboxes = 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: Enable indexing of online delegate mailboxes
; State: Enabled
; Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Windows Search]
"EnableIndexingDelegateMailboxes"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Windows Search'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableIndexingDelegateMailboxes' -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: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Windows Search' -Name 'EnableIndexingDelegateMailboxes' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Windows Search'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableIndexingDelegateMailboxes' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
# 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: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Windows Search' -Name 'EnableIndexingDelegateMailboxes' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enable indexing of online delegate mailboxes
# State: Enabled
# Supported on: Any version of Microsoft Windows with Windows Search 4.0 or later
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\Windows\Windows Search'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableIndexingDelegateMailboxes' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.