Prevent access to the about:flags page in Microsoft Edge
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 settings lets you decide whether employees can access the about:flags page, which is used to change developer settings and to enable experimental features. If you enable this policy setting, employees can't access the about:flags page. If you disable or don't configure this setting, employees can access the about:flags page.
Registry
HKLM
Software\Policies\Microsoft\MicrosoftEdge\Main HKCU
Software\Policies\Microsoft\MicrosoftEdge\Main Value name: PreventAccessToAboutFlagsInMicrosoftEdge
Enabled: PreventAccessToAboutFlagsInMicrosoftEdge = 1
Disabled: PreventAccessToAboutFlagsInMicrosoftEdge = 0
MDM / Intune (CSP)
Device
./Device/Vendor/MSFT/Policy/Config/Browser/PreventAccessToAboutFlagsInMicrosoftEdge User
./User/Vendor/MSFT/Policy/Config/Browser/PreventAccessToAboutFlagsInMicrosoftEdge Microsoft Learn documentation Mapping data: Microsoft Learn (CC BY 4.0)
CSP values
-
0 (Default)- Allowed. -
1- Prevents users from accessing the about:flags page.
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: Prevent access to the about:flags page in Microsoft Edge
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge on Windows 10, Version 1607 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\MicrosoftEdge\Main]
"PreventAccessToAboutFlagsInMicrosoftEdge"=dword:00000001More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Prevent access to the about:flags page in Microsoft Edge
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Main'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventAccessToAboutFlagsInMicrosoftEdge' -Value 1 -Type DWordIntune XML
OMA-URI: ./Device/Vendor/MSFT/Policy/Config/Browser/PreventAccessToAboutFlagsInMicrosoftEdge
Data type: String
Value:
<enabled/>Intune Remediation
# === Detection script ===
# Exported from gporais.com
# Policy: Prevent access to the about:flags page in Microsoft Edge
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'PreventAccessToAboutFlagsInMicrosoftEdge' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent access to the about:flags page in Microsoft Edge
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Main'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventAccessToAboutFlagsInMicrosoftEdge' -Value 1 -Type DWordSCCM scripts
# Exported from gporais.com
# Policy: Prevent access to the about:flags page in Microsoft Edge
# 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: Prevent access to the about:flags page in Microsoft Edge
# 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
}
$checks = @(
(Test-RegistryValue -Path 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Main' -Name 'PreventAccessToAboutFlagsInMicrosoftEdge' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Prevent access to the about:flags page in Microsoft Edge
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge on Windows 10, Version 1607 or later
$path = 'HKLM:\Software\Policies\Microsoft\MicrosoftEdge\Main'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'PreventAccessToAboutFlagsInMicrosoftEdge' -Value 1 -Type DWordBuilding a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.