Desktop App Installer

Enable Windows Package Manager Allowed Sources

ComputerNeeds changes for IntuneEnableAllowedSources

Supported on SUPPORTED_Windows_10_0_RS5 (defined in the Windows templates)

1.29.380

What it does

This policy controls additional sources allowed by the enterprise IT administrator. If you do not configure this policy, users will be able to add or remove additional sources other than those configured by policy. If you enable this policy, only the sources specified can be added or removed from the Windows Package Manager. The representation for each allowed source can be obtained from installed sources using 'winget source export'. If you disable this policy, no additional sources can be configured for the Windows Package Manager.

What it writes

Hive: HKEY_LOCAL_MACHINE
Registry key: Software\Policies\Microsoft\Windows\AppInstaller
Value name: EnableAllowedSources
When enabled: DWORD 1
When disabled: DWORD 0

Why it needs changes for Intune

Policy references a Windows supportedOn definition.
ADMX-INTUNE-WINDOWS-SUPPORTEDON-REFERENCE

Options

Option	Type	Registry value	Allowed values
Allowed Sources	List of values	`Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources`	Any

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\Windows\AppInstaller\AllowedSources]

[HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller]
"EnableAllowedSources"=dword:00000001

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: Enable Windows Package Manager Allowed Sources
# Name: EnableAllowedSources
# Scope: Machine
# State: Enabled
# Source: DesktopAppInstaller.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller' -Name 'EnableAllowedSources' -PropertyType 'DWord' -Value 1

Clear-RegistryKeyValues -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources'

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: AllowedSources

ADMX profile candidate (OMA-URI)

./Device/Vendor/MSFT/Policy/Config/ADMX_DesktopAppInstaller/EnableAllowedSources

Intune 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: Enable Windows Package Manager Allowed Sources
# Name: EnableAllowedSources
# Scope: Machine
# State: Enabled
# Source: DesktopAppInstaller.admx

$isMatch = Test-RegistryValueEquals -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller' -Name 'EnableAllowedSources' -Kind 'DWord' -Expected 1
if (-not $isMatch) {
    $reasons.Add('Value mismatch: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller\EnableAllowedSources') | Out-Null
}

$keyPath = 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources'
if (Test-Path -LiteralPath $keyPath) {
    $propertyNames = (Get-Item -LiteralPath $keyPath).Property
    if ($propertyNames.Count -gt 0) {
        $reasons.Add('Key should be empty: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources') | 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: Enable Windows Package Manager Allowed Sources
# Name: EnableAllowedSources
# Scope: Machine
# State: Enabled
# Source: DesktopAppInstaller.admx

Set-RegistryValue -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller' -Name 'EnableAllowedSources' -PropertyType 'DWord' -Value 1

Clear-RegistryKeyValues -Path 'Registry::HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources'

History 24 retained releases

1.10.32024 Feb 2025
- Translations changed; choose a language above to compare its wording.
1.9.2518028 Oct 2024
- Renamed Enable ~~[removed: App Installer]~~[added: Windows Package Manager] Allowed Sources
1.6.348218 Dec 2023
- Already present in the first release ChangeIntel keeps.

21 later releases left it unchanged.

Template

Internal name: EnableAllowedSources
Namespace: Microsoft.Policies.AppInstaller
Template file: DesktopAppInstaller.admx
Release: WinGet 1.29.380 · file set 11a1c20074c1ef1d…

Definition, editor controls and support

Definition

<policy class="Machine" displayName="$(string.EnableAllowedSources)" explainText="$(string.EnableAllowedSourcesExplanation)" key="Software\Policies\Microsoft\Windows\AppInstaller" name="EnableAllowedSources" presentation="$(presentation.AllowedSources)" valueName="EnableAllowedSources" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.AppInstaller:AppInstaller" />
      <supportedOn ref="Microsoft.Policies.Windows:SUPPORTED_Windows_10_0_RS5" />
      <enabledValue>
        <decimal value="1" />
      </enabledValue>
      <disabledValue>
        <decimal value="0" />
      </disabledValue>
      <elements>
        <list id="AllowedSources" key="Software\Policies\Microsoft\Windows\AppInstaller\AllowedSources" valuePrefix="" />
      </elements>
    </policy>

Editor controls

<presentation id="AllowedSources" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
        <listBox refId="AllowedSources" required="false">Allowed Sources: </listBox>
      </presentation>

Supported platforms and category

Microsoft.Policies.AppInstaller:category:AppInstaller
<category displayName="$(string.AppInstaller)" name="AppInstaller" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
Microsoft.Policies.AppInstaller:unresolved:Microsoft.Policies.Windows:SUPPORTED_Windows_10_0_RS5
<unresolved reference="Microsoft.Policies.Windows:SUPPORTED_Windows_10_0_RS5" />
Microsoft.Policies.AppInstaller:unresolved:Microsoft.Policies.Windows:WindowsComponents
<unresolved reference="Microsoft.Policies.Windows:WindowsComponents" />
Microsoft.Policies.AppInstaller:category:AppInstaller
<category displayName="$(string.AppInstaller)" name="AppInstaller" xmlns="http://schemas.microsoft.com/GroupPolicy/2006/07/PolicyDefinitions">
      <parentCategory ref="Microsoft.Policies.Windows:WindowsComponents" />
    </category>
<strings><string id="Microsoft.Policies.AppInstaller:AppInstaller">Desktop App Installer</string></strings>