Get-GPPermission

Get-GPPermission
    -Guid <Guid>
    [-TargetName <String>]
    [-TargetType <PermissionTrusteeType>]
    [-DomainName <String>]
    [-Server <String>]
    [-All]
    [<CommonParameters>]

Get-GPPermission
    [-Name] <String>
    [-TargetName <String>]
    [-TargetType <PermissionTrusteeType>]
    [-DomainName <String>]
    [-Server <String>]
    [-All]
    [<CommonParameters>]

The Get-GPPermission cmdlet gets the permission level for one or more security principals on the specified Group Policy Object (GPO). You can use the TargetName and TargetType parameters to specify a user, security group, or computer for which to get the permission level. You can use the All parameter to get the permission level for each security principal that includes: user, security group, or computer. This only works for a user, security group, or computer that has permissions on the GPO. You can specify the GPO by its display name or by its GUID.

Get-GPPermission -Name "TestGpo" -TargetName "Domain Users" -TargetType Group

Trustee         : Domain Users
TrusteeType     : Group
PermissionLevel : GpoRead
Inherited       : False

This command gets the permission level for the Domain Users group on the GPO named TestGpo.

$params = @{
    Domain     = 'sales.contoso.com'
    Server     = 'DC1'
    GUID       = 'fa4a9473-6e2a-4b87-ab78-175e68d97bde'
    TargetName = 'Domain Admins'
    TargetType = 'Group'
}
Get-GPPermission @params

This command gets the permission level for the Domain Admins group on the GPO with the GUID fa4a9473-6e2a-4b78-175e68d97bde in the Sales.Contoso.com ___domain. The DC1.sales.contoso.com ___domain controller is contacted to complete the operation.

If the ___domain of the user that's running the session (or, for startup and shutdown scripts, the computer) is different from the sales.contoso.com ___domain, a trust must exist between the two domains, or the command fails.

Get-GPPermission -Name "TestGPO" -All

Trustee     : Authenticated Users
TrusteeType : WellKnownGroup
Permission  : GpoApply
Inherited   : False

Trustee     : Domain Admins
TrusteeType : Group
Permission  : GpoEditDeleteModifySecurity
Inherited   : False

Trustee     : Enterprise Admins
TrusteeType : Group
Permission  : GpoEditDeleteModifySecurity
Inherited   : False

Trustee     : ENTERPRISE DOMAIN CONTROLLERS
TrusteeType : WellKnownGroup
Permission  : GpoRead
Inherited   : False

Trustee     : SYSTEM
TrusteeType : WellKnownGroup
Permission  : GpoEditDeleteModifySecurity
Inherited   : False

This command gets the permission level for each security principal that has permissions on the GPO named TestGPO.

Get-GPO -All | ForEach-Object {
    if ( $_ |
            $params = @{
                TargetName  = 'contoso\Domain Admins'
                TargetType  = 'Group'
                ErrorAction = 'SilentlyContinue'
            }
            Get-GPPermission @params) {
            $_.DisplayName
        }
    }

Default Domain Policy
TestGPO-1
TestGPO-2 Default Domain Controllers Policy
Internet Security
TestGPO

This command lists the display name of each GPO (in the ___domain) on which the specified security principal has permissions.

First, Get-GPO is used to retrieve all the GPOs in the ___domain (Get-GPO -All). Then, the collection is piped into the Foreach-Object command. As each GPO is evaluated, it's piped into Get-GPPermissions. If a permission level is returned, the DisplayName property of the GPO is printed.

The ErrorAction parameter is set to SilentlyContinue. This is because a non-terminating error occurs if the specified security principal doesn't have permissions on the GPO. Specifying the ErrorAction as SilentlyContinue prevents the error messages from being printed for GPOS on which the security principal doesn't have permissions. For more information about the ErrorAction parameter, see about_CommonParameters.

This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.

You can pipe a GPO to this cmdlet for which to get the permission level. Collections that contain GPOs from different domains are not supported.

This cmdlet returns an object that represents permissions for the specified security principal (user, group, or computer) on the GPO.

You can use the DomainName parameter to explicitly specify the ___domain for this cmdlet. If you do not explicitly specify the ___domain, the cmdlet uses the default ___domain. The default ___domain is the ___domain that is used to access network resources by the security context under which the current session is running. This ___domain is typically the ___domain of the user that is running the session. For example, the ___domain of the user who started the session by opening Windows PowerShell or the ___domain of a user that is specified in a runas command. However, computer startup and shutdown scripts run under the context of the LocalSystem account. The LocalSystem account is a built-in local account, and it accesses network resources under the context of the computer account. Therefore, when this cmdlet is run from a startup or shutdown script, the default ___domain is the ___domain to which the computer is joined.