All Removable Storage classes: Deny all access
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Windows Vista
Path in the GPO console
User Configuration\Administrative Templates\System\Removable Storage Access Description
Configure access to all removable storage classes. This policy setting takes precedence over any individual removable storage policy settings. To manage individual classes, use the policy settings available for each class. If you enable this policy setting, no access is allowed to any removable storage class. If you disable or do not configure this policy setting, write and read accesses are allowed to all removable storage classes.
Registry
HKCU
Software\Policies\Microsoft\Windows\RemovableStorageDevices Value name: Deny_All
Enabled: Deny_All = 1
Disabled: Deny_All = 0
MDM / Intune (CSP)
./User/Vendor/MSFT/Policy/Config/ADMX_RemovableStorage/RemovableStorageClasses_DenyAll_Access_1 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: All Removable Storage classes: Deny all access
; State: Enabled
; Supported on: At least Windows Vista
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\RemovableStorageDevices]
"Deny_All"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Deny_All' -Value 1 -Type DWordIntune XML
OMA-URI: ./User/Vendor/MSFT/Policy/Config/ADMX_RemovableStorage/RemovableStorageClasses_DenyAll_Access_1
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices' -Name 'Deny_All' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Deny_All' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# 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: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
$checks = @(
(Test-RegistryValue -Path 'HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices' -Name 'Deny_All' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: All Removable Storage classes: Deny all access
# State: Enabled
# Supported on: At least Windows Vista
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\Software\Policies\Microsoft\Windows\RemovableStorageDevices'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'Deny_All' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.