Configure list of IEEE 1667 silos usable on your computer
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Server 2008 R2 or Windows 7
Path in the GPO console
Computer Configuration\Administrative Templates\System\Enhanced Storage Access Description
This policy setting allows you to create a list of IEEE 1667 silos, compliant with the Institute of Electrical and Electronics Engineers, Inc. (IEEE) 1667 specification, that are usable on your computer. If you enable this policy setting, only IEEE 1667 silos that match a silo type identifier specified in this policy are usable on your computer. If you disable or do not configure this policy setting, all IEEE 1667 silos on Enhanced Storage devices are usable on your computer.
Registry
HKLM
Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos Value name: SiloAllowListPolicy
Enabled: SiloAllowListPolicy = 1
Disabled: SiloAllowListPolicy = 0
MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/ADMX_EnhancedStorage/ApprovedSilos 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: Configure list of IEEE 1667 silos usable on your computer
; State: Enabled
; Supported on: At least Windows Server 2008 R2 or Windows 7
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos]
"SiloAllowListPolicy"=dword:00000001
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List]
; List values: enter one value per line in the builder UI.More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SiloAllowListPolicy' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Intune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/ADMX_EnhancedStorage/ApprovedSilos
Data type: String
Value:
<enabled/>
<!-- ApprovedSilos_List: enter one value per line before copying this XML payload. -->Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
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
}
# HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos' -Name 'SiloAllowListPolicy' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SiloAllowListPolicy' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.SCCM scripts
# Exported from gporais.com
# Policy: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# 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: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
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
}
# HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos' -Name 'SiloAllowListPolicy' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure list of IEEE 1667 silos usable on your computer
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'SiloAllowListPolicy' -Value 1 -Type DWord
$path = 'HKLM:\Software\Policies\Microsoft\Windows\EnhancedStorageDevices\ApprovedSilos\List'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Building a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.