Configure how aggressively Remote Encryption Protection blocks threats
Verified with Windows 11 25H2 — updated on July 12, 2026
Supported on: At least Windows Server 2016, Windows 10 Version 1607
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Microsoft Defender Antivirus\Remediation\Behavioral Network Blocks\Remote Encryption Protection Description
Set the criteria for when remote encryption preventionprotection blocks IP addresses. Supported settings: *0 - Low: Block only when confidence level is 100% (Default) *1 - Medium: Use cloud aggregation and block when confidence level is above 99% *2 - High: Use cloud intel and context, and block when confidence level is above 90%
Registry
HKLM
Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection Value name: RemoteEncryptionProtectionAggressiveness
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 how aggressively Remote Encryption Protection blocks threats
; State: Enabled
; Supported on: At least Windows Server 2016, Windows 10 Version 1607
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection]
"RemoteEncryptionProtectionAggressiveness"=dword:00000001
"RemoteEncryptionProtectionAggressiveness"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Configure how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
$path = 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -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: Configure how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionAggressiveness' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionAggressiveness' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
$path = 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Configure how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
# 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 how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionAggressiveness' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionAggressiveness' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure how aggressively Remote Encryption Protection blocks threats
# State: Enabled
# Supported on: At least Windows Server 2016, Windows 10 Version 1607
$path = 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionAggressiveness' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.