Microsoft Edge › Extensions
Configure extension management settings
Supported on Microsoft Edge version 77, Windows 7 or later
What it does
Setting this policy controls extension management settings for Microsoft Edge, including those configured by other extension-related policies. This policy supersedes any legacy policies. This policy maps an extension ID or update URL to a specific configuration. You can define a default configuration using the special ID "*", which applies to extensions without a custom configuration. Note that any per-ID extension setting from either 'ExtensionInstallForcelist' (Control which extensions are installed silently), 'ExtensionInstallAllowlist' (Allow specific extensions to be installed), 'ExtensionInstallBlocklist' (Control which extensions cannot be installed), or 'ExtensionSettings' (Configure extension management settings) will only inherit 'installation_mode' and 'update_url' from the "*" defaults. It will not inherit any other properties. With an update URL, configuration applies to extensions with the exact update URL stated in the extension manifest. If the 'override_update_url' flag is set to true, the extension is installed and updated using the update URL specified in the 'ExtensionInstallForcelist' policy or in 'update_url' field in this policy. The flag 'override_update_url' is ignored if the 'update_url' is the Edge Add-ons website update URL. For more details, check out the detailed guide to ExtensionSettings policy available at https://go.microsoft.com/fwlink/?linkid=2161555. To block extensions from a particular third party store, you only need to block the update_url for that store. For example, if you want to block extensions from Chrome Web Store, you can use the following JSON. {"update_url:https://clients2.google.com/service/update2/crx":{"installation_mode":"blocked"}} Note that you can still use 'ExtensionInstallForcelist' and 'ExtensionInstallAllowlist' to allow / force install specific extensions even if the store is blocked using the JSON in the previous example. If the 'sidebar_auto_open_blocked' flag is set to true in an extension's configuration, the hub-app (sidebar app) corresponding to the specified extension will be prevented from automatically opening. As of Microsoft Edge version 154, applying 'runtime_blocked_hosts' to an extension with the 'debugger' permission will completely disable 'chrome.debugger.attach()' on all targets. On Windows instances, apps and extensions from outside the Microsoft Edge Add-ons website can only be forced installed if the instance is joined to a Microsoft Active Directory domain or joined to Microsoft Azure Active Directory®. On macOS instances, apps and extensions from outside the Microsoft Edge Add-ons website can only be force installed if the instance is managed via MDM, joined to a domain via MCX. Starting in Microsoft Edge version 149, the 'Microsoft365CopilotChatIconEnabled' (Control whether Microsoft 365 Copilot Chat shows in the Microsoft Edge for Business toolbar) policy controls the display of Copilot in the toolbar. Example value: { "*": { "allowed_types": [ "hosted_app" ], "blocked_install_message": "Custom error message.", "blocked_permissions": [ "downloads", "bookmarks" ], "install_sources": [ "https://company-intranet/apps" ], "installation_mode": "blocked", "runtime_allowed_hosts": [ "*://good.contoso.com" ], "runtime_blocked_hosts": [ "*://*.contoso.com" ] }, "abcdefghijklmnopabcdefghijklmnop": { "blocked_permissions": [ "history" ], "installation_mode": "allowed", "minimum_version_required": "1.0.1", "file_url_navigation_allowed": true }, "bcdefghijklmnopabcdefghijklmnopa": { "allowed_permissions": [ "downloads" ], "installation_mode": "force_installed", "override_update_url": true, "sidebar_auto_open_blocked": true, "runtime_allowed_hosts": [ "*://good.contoso.com" ], "runtime_blocked_hosts": [ "*://*.contoso.com" ], "toolbar_state": "force_shown", "update_url": "https://contoso.com/update_url" }, "cdefghijklmnopabcdefghijklmnopab": { "blocked_install_message": "Custom error message.", "installation_mode": "blocked" }, "defghijklmnopabcdefghijklmnopabc,efghijklmnopabcdefghijklmnopabcd": { "blocked_install_message": "Custom error message.", "installation_mode": "blocked" }, "fghijklmnopabcdefghijklmnopabcde": { "blocked_install_message": "Custom removal message.", "installation_mode": "removed" }, "update_url:https://www.contoso.com/update.xml": { "allowed_permissions": [ "downloads" ], "blocked_permissions": [ "wallpaper" ], "installation_mode": "allowed" } } Compact example value: {"*": {"allowed_types": ["hosted_app"], "blocked_install_message": "Custom error message.", "blocked_permissions": ["downloads", "bookmarks"], "install_sources": ["https://company-intranet/apps"], "installation_mode": "blocked", "runtime_allowed_hosts": ["*://good.contoso.com"], "runtime_blocked_hosts": ["*://*.contoso.com"]}, "abcdefghijklmnopabcdefghijklmnop": {"blocked_permissions": ["history"], "installation_mode": "allowed", "minimum_version_required": "1.0.1", "file_url_navigation_allowed": true}, "bcdefghijklmnopabcdefghijklmnopa": {"allowed_permissions": ["downloads"], "installation_mode": "force_installed", "override_update_url": true, "sidebar_auto_open_blocked": true, "runtime_allowed_hosts": ["*://good.contoso.com"], "runtime_blocked_hosts": ["*://*.contoso.com"], "toolbar_state": "force_shown", "update_url": "https://contoso.com/update_url"}, "cdefghijklmnopabcdefghijklmnopab": {"blocked_install_message": "Custom error message.", "installation_mode": "blocked"}, "defghijklmnopabcdefghijklmnopabc,efghijklmnopabcdefghijklmnopabcd": {"blocked_install_message": "Custom error message.", "installation_mode": "blocked"}, "fghijklmnopabcdefghijklmnopabcde": {"blocked_install_message": "Custom removal message.", "installation_mode": "removed"}, "update_url:https://www.contoso.com/update.xml": {"allowed_permissions": ["downloads"], "blocked_permissions": ["wallpaper"], "installation_mode": "allowed"}}
What it writes
- Hive
- HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
- Registry key
Software\Policies\Microsoft\Edge
Options
| Option | Type | Registry value | Allowed values |
|---|---|---|---|
| Configure extension management settings | Text | ExtensionSettings |
Up to 1000000 characters |
Configure and deploy
Choose a state and the option values; the output below is generated from the template for exactly that.
Enabled · Computer · template defaults
Registry file (.reg)
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge]
"ExtensionSettings"=""
PowerShell
$ErrorActionPreference = 'Stop'
function Set-RegistryValue {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name,
[Parameter(Mandatory = $true)][string] $PropertyType,
[Parameter(Mandatory = $true)][object] $Value
)
if (-not (Test-Path -LiteralPath $Path)) {
New-Item -Path $Path -Force | Out-Null
}
New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}
function Remove-RegistryValue {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name
)
if (Test-Path -LiteralPath $Path) {
Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
}
}
function Clear-RegistryKeyValues {
param(
[Parameter(Mandatory = $true)][string] $Path
)
if (-not (Test-Path -LiteralPath $Path)) {
return
}
foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
}
}
# Policy: Configure extension management settings
# Name: ExtensionSettings
# Scope: Machine
# State: Enabled
# Source: msedge.admx
Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge' -Name 'ExtensionSettings' -PropertyType 'String' -Value ''
- The OMA-URI is an inferred ADMX-backed Policy CSP candidate derived from the source ADMX file name and policy name.
- Some Microsoft policies use built-in Policy CSP pages whose area names don't match the ADMX file name, so verify the candidate against Microsoft Learn before deployment.
- The generated payload is incomplete because one or more ADMX element values were not supplied: ExtensionSettings
ADMX profile candidate (OMA-URI)
./Device/Vendor/MSFT/Policy/Config/ADMX_msedge/ExtensionSettingsIntune remediation scripts
Detection
$ErrorActionPreference = 'Stop'
$reasons = [System.Collections.Generic.List[string]]::new()
function Test-RegistryValueExists {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name
)
if (-not (Test-Path -LiteralPath $Path)) {
return $false
}
return $null -ne (Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue)
}
function Test-RegistryValueEquals {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name,
[Parameter(Mandatory = $true)][string] $Kind,
[Parameter(Mandatory = $true)][object] $Expected
)
if (-not (Test-Path -LiteralPath $Path)) {
return $false
}
$valueObject = Get-ItemProperty -LiteralPath $Path -Name $Name -ErrorAction SilentlyContinue
if ($null -eq $valueObject) {
return $false
}
$actual = $valueObject.$Name
switch ($Kind) {
'String' { return [string]$actual -ceq [string]$Expected }
'ExpandString' { return [string]$actual -ceq [string]$Expected }
'DWord' { return [uint32]$actual -eq [uint32]$Expected }
'QWord' { return [uint64]$actual -eq [uint64]$Expected }
'MultiString' {
$actualArray = @($actual)
$expectedArray = @($Expected)
if ($actualArray.Count -ne $expectedArray.Count) { return $false }
for ($index = 0; $index -lt $actualArray.Count; $index++) {
if ([string]$actualArray[$index] -cne [string]$expectedArray[$index]) { return $false }
}
return $true
}
'Binary' {
$actualArray = [byte[]]$actual
$expectedArray = [byte[]]$Expected
if ($actualArray.Length -ne $expectedArray.Length) { return $false }
for ($index = 0; $index -lt $actualArray.Length; $index++) {
if ($actualArray[$index] -ne $expectedArray[$index]) { return $false }
}
return $true
}
default { return [string]$actual -ceq [string]$Expected }
}
}
# Policy: Configure extension management settings
# Name: ExtensionSettings
# Scope: Machine
# State: Enabled
# Source: msedge.admx
$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge' -Name 'ExtensionSettings' -Kind 'String' -Expected ''
if (-not $isMatch) {
$reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\ExtensionSettings') | Out-Null
}
if ($reasons.Count -eq 0) {
Write-Output 'Compliant'
exit 0
}
$reasons | ForEach-Object { Write-Output $_ }
exit 1
Remediation
$ErrorActionPreference = 'Stop'
function Set-RegistryValue {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name,
[Parameter(Mandatory = $true)][string] $PropertyType,
[Parameter(Mandatory = $true)][object] $Value
)
if (-not (Test-Path -LiteralPath $Path)) {
New-Item -Path $Path -Force | Out-Null
}
New-ItemProperty -LiteralPath $Path -Name $Name -PropertyType $PropertyType -Value $Value -Force | Out-Null
}
function Remove-RegistryValue {
param(
[Parameter(Mandatory = $true)][string] $Path,
[Parameter(Mandatory = $true)][string] $Name
)
if (Test-Path -LiteralPath $Path) {
Remove-ItemProperty -LiteralPath $Path -Name $Name -Force -ErrorAction SilentlyContinue
}
}
function Clear-RegistryKeyValues {
param(
[Parameter(Mandatory = $true)][string] $Path
)
if (-not (Test-Path -LiteralPath $Path)) {
return
}
foreach ($propertyName in (Get-Item -LiteralPath $Path).Property) {
Remove-ItemProperty -LiteralPath $Path -Name $propertyName -Force -ErrorAction SilentlyContinue
}
}
# Policy: Configure extension management settings
# Name: ExtensionSettings
# Scope: Machine
# State: Enabled
# Source: msedge.admx
Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge' -Name 'ExtensionSettings' -PropertyType 'String' -Value ''
History 37 retained releases
- 154.0.4258.3724 Sep 2026
- Description
… app) corresponding to the specified extension will be prevented from automatically opening.
[added: As of Microsoft Edge version 154, applying 'runtime_blocked_hosts' to an extension with the 'debugger' permission will completely disable 'chrome.debugger.attach()' on all targets.
]On Windows instances, apps and extensions from outside the Microsoft Edge Add-ons …
Whole description, marked
Setting this policy controls extension management settings for Microsoft Edge, including those configured by other extension-related policies. This policy supersedes any legacy policies. This policy maps an extension ID or update URL to a specific configuration. You can define a default configuration using the special ID "*", which applies to extensions without a custom configuration. Note that any per-ID extension setting from either 'ExtensionInstallForcelist' (Control which extensions are installed silently), 'ExtensionInstallAllowlist' (Allow specific extensions to be installed), 'ExtensionInstallBlocklist' (Control which extensions cannot be installed), or 'ExtensionSettings' (Configure extension management settings) will only inherit 'installation_mode' and 'update_url' from the "*" defaults. It will not inherit any other properties. With an update URL, configuration applies to extensions with the exact update URL stated in the extension manifest. If the 'override_update_url' flag is set to true, the extension is installed and updated using the update URL specified in the 'ExtensionInstallForcelist' policy or in 'update_url' field in this policy. The flag 'override_update_url' is ignored if the 'update_url' is the Edge Add-ons website update URL. For more details, check out the detailed guide to ExtensionSettings policy available at https://go.microsoft.com/fwlink/?linkid=2161555. To block extensions from a particular third party store, you only need to block the update_url for that store. For example, if you want to block extensions from Chrome Web Store, you can use the following JSON. {"update_url:https://clients2.google.com/service/update2/crx":{"installation_mode":"blocked"}} Note that you can still use 'ExtensionInstallForcelist' and 'ExtensionInstallAllowlist' to allow / force install specific extensions even if the store is blocked using the JSON in the previous example. If the 'sidebar_auto_open_blocked' flag is set to true in an extension's configuration, the hub-app (sidebar app) corresponding to the specified extension will be prevented from automatically opening. [added: As of Microsoft Edge version 154, applying 'runtime_blocked_hosts' to an extension with the 'debugger' permission will completely disable 'chrome.debugger.attach()' on all targets. ]On Windows instances, apps and extensions from outside the Microsoft Edge Add-ons website can only be forced installed if the instance is joined to a Microsoft Active Directory domain or joined to Microsoft Azure Active Directory®. On macOS instances, apps and extensions from outside the Microsoft Edge Add-ons website can only be force installed if the instance is managed via MDM, joined to a domain via MCX. Starting in Microsoft Edge version 149, the 'Microsoft365CopilotChatIconEnabled' (Control whether Microsoft 365 Copilot Chat shows in the Microsoft Edge for Business toolbar) policy controls the display of Copilot in the toolbar. Example value: { "*": { "allowed_types": [ "hosted_app" ], "blocked_install_message": "Custom error message.", "blocked_permissions": [ "downloads", "bookmarks" ], "install_sources": [ "https://company-intranet/apps" ], "installation_mode": "blocked", "runtime_allowed_hosts": [ "*://good.contoso.com" ], "runtime_blocked_hosts": [ "*://*.contoso.com" ] }, "abcdefghijklmnopabcdefghijklmnop": { "blocked_permissions": [ "history" ], "installation_mode": "allowed", "minimum_version_required": "1.0.1", "file_url_navigation_allowed": true }, "bcdefghijklmnopabcdefghijklmnopa": { "allowed_permissions": [ "downloads" ], "installation_mode": "force_installed", "override_update_url": true, "sidebar_auto_open_blocked": true, "runtime_allowed_hosts": [ "*://good.contoso.com" ], "runtime_blocked_hosts": [ "*://*.contoso.com" ], "toolbar_state": "force_shown", "update_url": "https://contoso.com/update_url" }, "cdefghijklmnopabcdefghijklmnopab": { "blocked_install_message": "Custom error message.", "installation_mode": "blocked" }, "defghijklmnopabcdefghijklmnopabc,efghijklmnopabcdefghijklmnopabcd": { "blocked_install_message": "Custom error message.", "installation_mode": "blocked" }, "fghijklmnopabcdefghijklmnopabcde": { "blocked_install_message": "Custom removal message.", "installation_mode": "removed" }, "update_url:https://www.contoso.com/update.xml": { "allowed_permissions": [ "downloads" ], "blocked_permissions": [ "wallpaper" ], "installation_mode": "allowed" } } Compact example value: {"*": {"allowed_types": ["hosted_app"], "blocked_install_message": "Custom error message.", "blocked_permissions": ["downloads", "bookmarks"], "install_sources": ["https://company-intranet/apps"], "installation_mode": "blocked", "runtime_allowed_hosts": ["*://good.contoso.com"], "runtime_blocked_hosts": ["*://*.contoso.com"]}, "abcdefghijklmnopabcdefghijklmnop": {"blocked_permissions": ["history"], "installation_mode": "allowed", "minimum_version_required": "1.0.1", "file_url_navigation_allowed": true}, "bcdefghijklmnopabcdefghijklmnopa": {"allowed_permissions": ["downloads"], "installation_mode": "force_installed", "override_update_url": true, "sidebar_auto_open_blocked": true, "runtime_allowed_hosts": ["*://good.contoso.com"], "runtime_blocked_hosts": ["*://*.contoso.com"], "toolbar_state": "force_shown", "update_url": "https://contoso.com/update_url"}, "cdefghijklmnopabcdefghijklmnopab": {"blocked_install_message": "Custom error message.", "installation_mode": "blocked"}, "defghijklmnopabcdefghijklmnopabc,efghijklmnopabcdefghijklmnopabcd": {"blocked_install_message": "Custom error message.", "installation_mode": "blocked"}, "fghijklmnopabcdefghijklmnopabcde": {"blocked_install_message": "Custom removal message.", "installation_mode": "removed"}, "update_url:https://www.contoso.com/update.xml": {"allowed_permissions": ["downloads"], "blocked_permissions": ["wallpaper"], "installation_mode": "allowed"}}
- Description
… app) corresponding to the specified extension will be prevented from automatically opening.
[added: As of Microsoft Edge version 154, applying 'runtime_blocked_hosts' to an extension with the 'debugger' permission will completely disable 'chrome.debugger.attach()' on all targets.
]On Windows instances, apps and extensions from outside the Microsoft Edge Add-ons …
- 150.0.4078.8016 Jul 2026
- Already present in the first release ChangeIntel keeps.
35 later releases left it unchanged.
Template
- Internal name
ExtensionSettings- Namespace
Microsoft.Policies.Edge- Template file
msedge.admx- Release
- Microsoft Edge 155.0.4283.62 · file set
0a733b0040dbbf02…
Definition, editor controls and support
Definition
<policy class="Both" displayName="$(string.ExtensionSettings)" explainText="$(string.ExtensionSettings_Explain)" key="Software\Policies\Microsoft\Edge" name="ExtensionSettings" presentation="$(presentation.ExtensionSettings)" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
<parentCategory ref="Microsoft.Policies.Edge:Extensions" />
<supportedOn ref="Microsoft.Policies.Edge:SUPPORTED_WIN7_V77" />
<elements>
<text id="ExtensionSettings" maxLength="1000000" valueName="ExtensionSettings" />
</elements>
</policy>Editor controls
<presentation id="ExtensionSettings" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions"><textBox refId="ExtensionSettings"><label>Configure extension management settings</label></textBox></presentation>Supported platforms and category
Microsoft.Policies.Edge:category:Extensions
<category displayName="$(string.Extensions_group)" name="Extensions" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
<parentCategory ref="Microsoft.Policies.Edge:microsoft_edge" />
</category>
Microsoft.Policies.Edge:category:microsoft_edge
<category displayName="$(string.microsoft_edge)" name="microsoft_edge" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.Edge:definition:SUPPORTED_WIN7_V77
<definition displayName="$(string.SUPPORTED_WIN7_V77)" name="SUPPORTED_WIN7_V77" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
Microsoft.Policies.Edge:category:Extensions
<category displayName="$(string.Extensions_group)" name="Extensions" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
<parentCategory ref="Microsoft.Policies.Edge:microsoft_edge" />
</category>
<strings><string id="Microsoft.Policies.Edge:Extensions_group">Extensions</string></strings>
Microsoft.Policies.Edge:category:microsoft_edge
<category displayName="$(string.microsoft_edge)" name="microsoft_edge" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.Edge:microsoft_edge">Microsoft Edge</string></strings>
Microsoft.Policies.Edge:definition:SUPPORTED_WIN7_V77
<definition displayName="$(string.SUPPORTED_WIN7_V77)" name="SUPPORTED_WIN7_V77" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions" />
<strings><string id="Microsoft.Policies.Edge:SUPPORTED_WIN7_V77">Microsoft Edge version 77, Windows 7 or later</string></strings>