List of managed add-ins
Verified with Microsoft 365/Office 5568.1000 — updated on September 4, 2026
Supported on: At least Windows Server 2008 R2 or Windows 7
Path in the GPO console
User Configuration\Administrative Templates\Microsoft Project 2016\Miscellaneous Description
This policy setting allows you to specify which add-ins are always enabled, always disabled (blocked), or configurable by the user. To block add-ins that are not managed by this policy setting, you must also configure the "Block all unmanaged add-ins" policy setting. To enable this policy setting, provide the following information for each add-in: In "Value name," specify the programmatic identifier (ProgID) for COM add-ins. To obtain the ProgID for an add-in, use Registry Editor on the client computer where the add-in is installed to locate key names under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\MS Project\Addins or HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\MS Project\Addins. You can also obtain the ProgID of an add-in by using Office Telemetry Dashboard. In "Value," specify the value as follows: To specify that an add-in is always disabled (blocked), type 0. To specify that an add-in is always enabled, type 1. To specify that an add-in is configurable by the user and not blocked by the "Block all unmanaged add-ins" policy setting when enabled, type 2. If you disable or do not enable this policy setting, the list of managed add-ins is deleted. If the "Block all unmanaged add-ins" policy setting is enabled, then all add-ins are blocked.
Registry
software\policies\microsoft\office\16.0\ms project\resiliency\addinlist Value name: policyon
Enabled: policyon = 1
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. ⓘ
.reg file
Windows Registry Editor Version 5.00
; Exported from gporais.com
; Policy: List of managed add-ins
; State: Enabled
; Supported on: At least Windows Server 2008 R2 or Windows 7
[HKEY_CURRENT_USER\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist]
"policyon"=dword:00000001
; List values: enter one value per line in the builder UI.More formats (PowerShell, Intune, SCCM)
PowerShell
# Exported from gporais.com
# Policy: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'policyon' -Value 1 -Type DWord
# 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: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
# HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist' -Name 'policyon' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'policyon' -Value 1 -Type DWord
# List values: enter one value per line in the builder UI.SCCM scripts
# Exported from gporais.com
# Policy: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# 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: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
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
}
# HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist: List values: enter one value per line in the builder UI.
$checks = @(
(Test-RegistryValue -Path 'HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist' -Name 'policyon' -Expected 1 -Kind DWord)
)
if ($checks -notcontains $false) {
Write-Output 'Compliant'
exit 0
}
Write-Output 'Non-compliant'
exit 1
# === Remediation script ===
# Exported from gporais.com
# Policy: List of managed add-ins
# State: Enabled
# Supported on: At least Windows Server 2008 R2 or Windows 7
# Warning: In SYSTEM context (the Intune default), HKCU targets the SYSTEM profile. Run this script using the logged-on credentials.
$path = 'HKCU:\software\policies\microsoft\office\16.0\ms project\resiliency\addinlist'
New-Item -Path $path -Force | Out-Null
Set-ItemProperty -Path $path -Name 'policyon' -Value 1 -Type DWord
# 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.