Control which apps cannot be opened in Microsoft Edge sidebar
Verified with Microsoft Edge 152.0.4191.53 — updated on July 10, 2026
Supported on: Microsoft Edge version 127, Windows 7 or later
Path in the GPO console
Computer Configuration\Administrative Templates\Microsoft Edge User Configuration\Administrative Templates\Microsoft Edge Description
Define a list of sites, based on URL patterns, that cannot be opened in sidebar. If you don't configure this policy, a user can open any app in sidebar. If the 'HubsSidebarEnabled' (Show Hubs Sidebar) policy is disabled, this list isn't used and no sidebar can be opened. For detailed information about valid url patterns, see https://go.microsoft.com/fwlink/?linkid=2281313. Note: A blocklist value of '*' means all apps are blocked unless they are explicitly listed in the 'EdgeSidebarAppUrlHostAllowList' (Allow specific apps to be opened in Microsoft Edge sidebar) policy. 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 sidebar. Example value: https://www.contoso.com [*.]contoso.edu
Registry
Software\Policies\Microsoft\Edge Software\Policies\Microsoft\Edge 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: Control which apps cannot be opened in Microsoft Edge sidebar
; State: Enabled
; Scope: Computer (HKLM)
; Supported on: Microsoft Edge version 127, Windows 7 or later
[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList]
; List values: enter one value per line in the builder UI.More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Intune 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: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, 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
}
# HKLM:\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList: List values: enter one value per line in the builder UI.
# No testable registry values are available for this state.
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.SCCM scripts
# Exported from gporais.com
# Policy: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, 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: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, 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
}
# HKLM:\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList: List values: enter one value per line in the builder UI.
# No testable registry values are available for this state.
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: Control which apps cannot be opened in Microsoft Edge sidebar
# State: Enabled
# Scope: Computer (HKLM)
# Supported on: Microsoft Edge version 127, Windows 7 or later
$path = 'HKLM:\Software\Policies\Microsoft\Edge\EdgeSidebarAppUrlHostBlockList'
New-Item -Path $path -Force | Out-Null
# List values: enter one value per line in the builder UI.Building a multi-setting collection? Add this setting and generate combined .reg / PowerShell / GPO scripts.