Allow fallback to SSL 3.0 (Internet Explorer)
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: At least Internet Explorer 7.0
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Internet Explorer\Security Features Description
This policy setting allows you to block an insecure fallback to SSL 3.0. When this policy is enabled, Internet Explorer will attempt to connect to sites using SSL 3.0 or below when TLS 1.0 or greater fails. We recommend that you do not allow insecure fallback in order to prevent a man-in-the-middle attack. This policy does not affect which security protocols are enabled. If you disable this policy, system defaults will be used.
Registry
HKLM
Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/InternetExplorer/AllowFallbackToSSL3 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: Allow fallback to SSL 3.0 (Internet Explorer)
; State: Enabled
; Supported on: At least Internet Explorer 7.0
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings]
"EnableSSL3Fallback"=dword:00000000More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableSSL3Fallback' -Value 0 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/InternetExplorer/AllowFallbackToSSL3
Data type: String
Value:
<enabled/>
<data id="Advanced_EnableSSL3FallbackOptions" value="0"/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'EnableSSL3Fallback' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableSSL3Fallback' -Value 0 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
# 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: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings' -Name 'EnableSSL3Fallback' -Expected 0 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow fallback to SSL 3.0 (Internet Explorer)
# State: Enabled
# Supported on: At least Internet Explorer 7.0
$path = 'HKLM:\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'EnableSSL3Fallback' -Value 0 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.