Enforce drive encryption type on operating system drives
Verified with Windows 11 25H2 — updated on July 12, 2026
Supported on: At least Windows Server 2012 or Windows 8
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\BitLocker Drive Encryption\Operating System Drives Description
This policy setting allows you to configure the encryption type used by BitLocker Drive Encryption. This policy setting is applied when you turn on BitLocker. Changing the encryption type has no effect if the drive is already encrypted or if encryption is in progress. Choose full encryption to require that the entire drive be encrypted when BitLocker is turned on. Choose used space only encryption to require that only the portion of the drive used to store data is encrypted when BitLocker is turned on. If you enable this policy setting the encryption type that BitLocker will use to encrypt drives is defined by this policy and the encryption type option will not be presented in the BitLocker setup wizard. If you disable or do not configure this policy setting, the BitLocker setup wizard will ask the user to select the encryption type before turning on BitLocker.
Registry
HKLM
SOFTWARE\Policies\Microsoft\FVE Value name: OSEncryptionType
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: Enforce drive encryption type on operating system drives
; State: Enabled
; Supported on: At least Windows Server 2012 or Windows 8
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\FVE]
"OSEncryptionType"=dword:00000001
"OSEncryptionType"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 0 -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: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\FVE' -Name 'OSEncryptionType' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\FVE' -Name 'OSEncryptionType' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
# 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: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\FVE' -Name 'OSEncryptionType' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\SOFTWARE\Policies\Microsoft\FVE' -Name 'OSEncryptionType' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enforce drive encryption type on operating system drives
# State: Enabled
# Supported on: At least Windows Server 2012 or Windows 8
$path = 'HKLM:\SOFTWARE\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'OSEncryptionType' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.