Configure Remote Encryption Protection blocking time
Verified with Windows 11 25H2 — updated on July 10, 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 maximum time an IP address is blocked by Remote Encryption Protection. After this time, blocked IP addresses will be able to reinitiate connections. Supported settings: * 0 - None: Internal feature logic will determine the actual blocking time * Specify other times in 15-minute increments
Registry
HKLM
Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection Value name: RemoteEncryptionProtectionMaxBlockTime
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 Remote Encryption Protection blocking time
; 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]
"RemoteEncryptionProtectionMaxBlockTime"=dword:00000001
"RemoteEncryptionProtectionMaxBlockTime"=dword:0000000fMore formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Configure Remote Encryption Protection blocking time
# 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 'RemoteEncryptionProtectionMaxBlockTime' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionMaxBlockTime' -Value 15 -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 Remote Encryption Protection blocking time
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionMaxBlockTime' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionMaxBlockTime' -Expected 15 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure Remote Encryption Protection blocking time
# 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 'RemoteEncryptionProtectionMaxBlockTime' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionMaxBlockTime' -Value 15 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Configure Remote Encryption Protection blocking time
# 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 Remote Encryption Protection blocking time
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionMaxBlockTime' -Expected 1 -Kind DWord)
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows Defender\Remediation\Behavioral Network Blocks\Remote Encryption Protection' -Name 'RemoteEncryptionProtectionMaxBlockTime' -Expected 15 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Configure Remote Encryption Protection blocking time
# 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 'RemoteEncryptionProtectionMaxBlockTime' -Value 1 -Type DWord
Set-ItemProperty -Path $path -Name 'RemoteEncryptionProtectionMaxBlockTime' -Value 15 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.