Allow Microsoft Compatibility List
Verified with Windows 11 25H2 — updated on July 30, 2026
Supported on: Microsoft Edge on Windows 10, Version 1607 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Windows Components\Microsoft Edge User Configuration\Administrative Templates\Windows Components\Microsoft Edge Description
This policy setting lets you decide whether to use the Microsoft Compatibility List (a Microsoft-provided list that helps sites with known compatibility issues to display properly) in Microsoft Edge. By default, the Microsoft Compatibility List is enabled and can be viewed by visiting about:compat. If you enable or don’t configure this setting, Microsoft Edge periodically downloads the latest version of the list from Microsoft, applying the updates during browser navigation. Visiting any site on the Microsoft Compatibility List prompts the employee to use Internet Explorer 11, where the site is automatically rendered as though it’s in whatever version of IE is necessary for it to appear properly. If you disable this setting, the Microsoft Compatibility List isn’t used during browser navigation.
Registry
Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation Value name: MSCompatibilityMode
Enabled: MSCompatibilityMode = 1
Disabled: MSCompatibilityMode = 0
MDM / Intune (CSP)
./Device/Vendor/MSFT/Policy/Config/Browser/AllowMicrosoftCompatibilityList ./User/Vendor/MSFT/Policy/Config/Browser/AllowMicrosoftCompatibilityList Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
CSP values
-
0- Prevented/Not allowed. -
1 (Default)- Allowed.
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: Allow Microsoft Compatibility List
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge on Windows 10, Version 1607 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation]
"MSCompatibilityMode"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MSCompatibilityMode' -Value 1 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/Browser/AllowMicrosoftCompatibilityList
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation' -Name 'MSCompatibilityMode' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MSCompatibilityMode' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 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: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation' -Name 'MSCompatibilityMode' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Allow Microsoft Compatibility List
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\BrowserEmulation'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'MSCompatibilityMode' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.