Enable post-quantum key agreement for WebRTC
Verified with Microsoft Edge 152.0.4191.53 — updated on July 10, 2026
Supported on: Microsoft Edge version 141, Windows 7 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Microsoft Edge\WebRtc settings User Configuration\Administrative Templates\Microsoft Edge\WebRtc settings Description
This policy controls the use of post-quantum key agreement for WebRTC in Microsoft Edge. If you enable this policy, Microsoft Edge will offer post-quantum key agreement for WebRTC. If you disable this policy, post-quantum key agreement won't be offered for WebRTC. If you don't configure this policy, post-quantum key agreement won't be offered for WebRTC. A future version of Microsoft Edge may enable this feature by default. Offering a post-quantum key agreement is backwards compatible. Existing datagram transport layer security (DTLS) peers and networking middleware are expected to ignore the new option and continue using previous options. However, devices that don't correctly implement DTLS may malfunction when offered the new option. For example, they may disconnect in response to unrecognized options or larger message sizes. Such devices aren’t post-quantum-ready and may interfere with an organization's post-quantum transition. If this issue occurs, administrators should contact the device vendor for a fix. This policy is temporary and will be removed in a future release.
Registry
Software\Policies\Microsoft\Edge Software\Policies\Microsoft\Edge Value name: WebRtcPostQuantumKeyAgreement
Enabled: WebRtcPostQuantumKeyAgreement = 1
Disabled: WebRtcPostQuantumKeyAgreement = 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. ⓘ
Applying both scopes creates an ambiguous configuration (computer takes precedence over user). Only do this intentionally.
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: Enable post-quantum key agreement for WebRTC
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge version 141, Windows 7 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge]
"WebRtcPostQuantumKeyAgreement"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'WebRtcPostQuantumKeyAgreement' -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: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'WebRtcPostQuantumKeyAgreement' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'WebRtcPostQuantumKeyAgreement' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
# 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: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\Edge' -Name 'WebRtcPostQuantumKeyAgreement' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Enable post-quantum key agreement for WebRTC
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 141, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'WebRtcPostQuantumKeyAgreement' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.