Prevent memory overwrite on restart
Verified with Windows 11 25H2 — updated on July 10, 2026
Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\BitLocker Drive Encryption Description
This policy setting controls computer restart performance at the risk of exposing BitLocker secrets. This policy setting is applied when you turn on BitLocker. BitLocker secrets include key material used to encrypt data. This policy setting applies only when BitLocker protection is enabled. If you enable this policy setting, memory will not be overwritten when the computer restarts. Preventing memory overwrite may improve restart performance but will increase the risk of exposing BitLocker secrets. If you disable or do not configure this policy setting, BitLocker secrets are removed from memory when the computer restarts.
Registry
HKLM
Software\Policies\Microsoft\FVE Value name: MorBehavior
Enabled: MorBehavior = 1
Disabled: MorBehavior = 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: Prevent memory overwrite on restart
; State: Enabled
; Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\FVE]
"MorBehavior"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MorBehavior' -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: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'MorBehavior' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MorBehavior' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and 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: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\FVE' -Name 'MorBehavior' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent memory overwrite on restart
# State: Enabled
# Supported on: Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows Server 2008, Windows 7, and Windows Vista
$path = 'HKLM:\Software\Policies\Microsoft\FVE'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MorBehavior' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.