Win32_DCOMApplicationSetting

The Win32_DCOMApplicationSetting WMI class represents the settings of a DCOM application. It contains DCOM configuration options associated with the AppID key in the registry. These options are val...

The Win32_DCOMApplicationSetting WMI class represents the settings of a DCOM application. It contains DCOM configuration options associated with the AppID key in the registry. These options are valid on the components logically grouped under the given application class.

Methods

Win32_DCOMApplicationSetting has 6 methods:
Method Description
GetAccessSecurityDescriptor Gets the security descriptor that controls who is allowed to access a DCOM application.
GetConfigurationSecurityDescriptor Gets the security descriptor that controls who is allowed to configure a DCOM application.
GetLaunchSecurityDescriptor Gets the security descriptor that controls who is allowed to launch a DCOM application.
SetAccessSecurityDescriptor Updates the access security descriptor of the DCOM application with a new security descriptor that is defined by an instance of the Win32_SecurityDescriptor class.
SetConfigurationSecurityDescriptor Updates the configuration security descriptor of the DCOM application with a new security descriptor that is defined by an instance of the Win32_SecurityDescriptor class.
SetLaunchSecurityDescriptor Updates the launch security descriptor of the DCOM application with a new security descriptor that is defined by an instance of the Win32_SecurityDescriptor class.

Learn more about Invoke-CimMethod and how to invoke commands. Click any of the methods listed above to learn more about their purpose, parameters, and return value.

Properties

Win32_DCOMApplicationSetting returns 12 properties:

'AppID','AuthenticationLevel','Caption','CustomSurrogate','Description',
'EnableAtStorageActivation','LocalService','RemoteServerName','RunAsUser','ServiceParameters','SettingID',
'UseSurrogate'

Unless explicitly marked as writeable, all properties are read-only. Read all properties for all instances:

Get-CimInstance -ClassName Win32_DCOMApplicationSetting -Property *

Most WMI classes return one or more instances.

When Get-CimInstance returns no result, then apparently no instances of class Win32_DCOMApplicationSetting exist. This is normal behavior.

Either the class is not implemented on your system (may be deprecated or due to missing drivers, i.e. CIM_VideoControllerResolution), or there are simply no physical representations of this class currently available (i.e. Win32_TapeDrive).

AppID

KEY PROPERTY STRING

Globally unique identifier (GUID) for this DCOM application.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID

AuthenticationLevel

WRITEABLE UINT32

Minimum client authentication level required by this COM server. If NULL, the default values are used.

AuthenticationLevel returns a numeric value. To translate it into a meaningful text, use any of the following approaches:

Use a PowerShell Hashtable
$AuthenticationLevel_map = @{
      1 = 'None'
      2 = 'Connect'
      3 = 'Call'
      4 = 'Packet'
      5 = 'PacketIntegrity'
      6 = 'PacketPrivacy'
}
Use a switch statement
switch([int]$value)
{
  1          {'None'}
  2          {'Connect'}
  3          {'Call'}
  4          {'Packet'}
  5          {'PacketIntegrity'}
  6          {'PacketPrivacy'}
  default    {"$value"}
}
Use Enum structure
Enum EnumAuthenticationLevel
{
  None              = 1
  Connect           = 2
  Call              = 3
  Packet            = 4
  PacketIntegrity   = 5
  PacketPrivacy     = 6
}

Examples

Use $AuthenticationLevel_map in a calculated property for Select-Object
<# 
  this example uses a hashtable to translate raw numeric values for 
  property "AuthenticationLevel" to friendly text

  Note: to use other properties than "AuthenticationLevel", look up the appropriate 
  translation hashtable for the property you would like to use instead.
#>

#region define hashtable to translate raw values to friendly text

# Please note: this hashtable is specific for property "AuthenticationLevel" 
# to translate other properties, use their translation table instead
$AuthenticationLevel_map = @{
      1 = 'None'
      2 = 'Connect'
      3 = 'Call'
      4 = 'Packet'
      5 = 'PacketIntegrity'
      6 = 'PacketPrivacy'
}

#endregion define hashtable

#region define calculated property (to be used with Select-Object)

<#
  a calculated property is defined by a hashtable with keys "Name" and "Expression"
  "Name" defines the name of the property (in this example, it is "AuthenticationLevel", but you can rename it to anything else)
  "Expression" defines a scriptblock that calculates the content of this property
  in this example, the scriptblock uses the hashtable defined earlier to translate each numeric
  value to its friendly text counterpart:
#>
 
$AuthenticationLevel = @{
  Name = 'AuthenticationLevel'
  Expression = {
    # property is an array, so process all values
    $value = $_.AuthenticationLevel
    $AuthenticationLevel_map[[int]$value]
  }  
}
#endregion define calculated property

# retrieve the instances, and output the properties "Caption" and "AuthenticationLevel". The latter
# is defined by the hashtable in $AuthenticationLevel: 
Get-CimInstance -Class Win32_DCOMApplicationSetting | Select-Object -Property Caption, $AuthenticationLevel

# ...or dump content of property AuthenticationLevel:
$friendlyValues = Get-CimInstance -Class Win32_DCOMApplicationSetting | 
    Select-Object -Property $AuthenticationLevel |
    Select-Object -ExpandProperty AuthenticationLevel

# output values
$friendlyValues

# output values as comma separated list
$friendlyValues -join ', '

# output values as bullet list
$friendlyValues | ForEach-Object { "- $_" }
Use $AuthenticationLevel_map to directly translate raw values from an instance
<# 
  this example uses a hashtable to manually translate raw numeric values 
  for property "Win32_DCOMApplicationSetting" to friendly text. This approach is ideal when
  there is just one instance to work with.

  Note: to use other properties than "Win32_DCOMApplicationSetting", look up the appropriate 
  translation hashtable for the property you would like to use instead.
#>

#region define hashtable to translate raw values to friendly text

# Please note: this hashtable is specific for property "Win32_DCOMApplicationSetting" 
# to translate other properties, use their translation table instead
$AuthenticationLevel_map = @{
      1 = 'None'
      2 = 'Connect'
      3 = 'Call'
      4 = 'Packet'
      5 = 'PacketIntegrity'
      6 = 'PacketPrivacy'
}

#endregion define hashtable

# get one instance:
$instance = Get-CimInstance -Class Win32_DCOMApplicationSetting | Select-Object -First 1

<#
  IMPORTANT: this example processes only one instance to illustrate
  the number-to-text translation. To process all instances, replace
  "Select-Object -First 1" with a "Foreach-Object" loop, and use
  the iterator variable $_ instead of $instance
#>

# query the property
$rawValue = $instance.AuthenticationLevel  

# translate raw value to friendly text:
$friendlyName = $AuthenticationLevel_map[[int]$rawValue]

# output value
$friendlyName
Use a switch statement inside a calculated property for Select-Object
<# 
  this example uses a switch clause to translate raw numeric 
  values for property "AuthenticationLevel" to friendly text. The switch
  clause is embedded into a calculated property so there is
  no need to refer to external variables for translation.

  Note: to use other properties than "AuthenticationLevel", look up the appropriate 
  translation switch clause for the property you would like to use instead.
#>

#region define calculated property (to be used with Select-Object)

<#
  a calculated property is defined by a hashtable with keys "Name" and "Expression"
  "Name" defines the name of the property (in this example, it is "AuthenticationLevel", but you can rename it to anything else)
  "Expression" defines a scriptblock that calculates the content of this property
  in this example, the scriptblock uses the hashtable defined earlier to translate each numeric
  value to its friendly text counterpart:
#>
 
$AuthenticationLevel = @{
  Name = 'AuthenticationLevel'
  Expression = {
    # property is an array, so process all values
    $value = $_.AuthenticationLevel
    
    switch([int]$value)
      {
        1          {'None'}
        2          {'Connect'}
        3          {'Call'}
        4          {'Packet'}
        5          {'PacketIntegrity'}
        6          {'PacketPrivacy'}
        default    {"$value"}
      }
      
  }  
}
#endregion define calculated property

# retrieve all instances...
Get-CimInstance -ClassName Win32_DCOMApplicationSetting | 
  # ...and output properties "Caption" and "AuthenticationLevel". The latter is defined
  # by the hashtable in $AuthenticationLevel:
  Select-Object -Property Caption, $AuthenticationLevel
Use the Enum from above to auto-translate the code values
<# 
  this example translates raw values by means of type conversion
  the friendly names are defined as enumeration using the
  keyword "enum" (PowerShell 5 or better)
  
  The raw value(s) are translated to friendly text by 
  simply converting them into the enum type.
  
  Note: to use other properties than "Win32_DCOMApplicationSetting", look up the appropriate 
  enum definition for the property you would like to use instead.
#>


#region define enum with value-to-text translation:
Enum EnumAuthenticationLevel
{
  None              = 1
  Connect           = 2
  Call              = 3
  Packet            = 4
  PacketIntegrity   = 5
  PacketPrivacy     = 6
}

#endregion define enum

# get one instance:
$instance = Get-CimInstance -Class Win32_DCOMApplicationSetting | Select-Object -First 1

<#
  IMPORTANT: this example processes only one instance to focus on
  the number-to-text type conversion. 
  
  To process all instances, replace   "Select-Object -First 1" 
  with a "Foreach-Object" loop, and use the iterator variable 
  $_ instead of $instance
#>

# query the property:
$rawValue = $instance.AuthenticationLevel

#region using strict type conversion

<#
  Note: strict type conversion fails if the raw value is 
  not defined by the enum. So if the list of allowable values
  was extended and the enum does not match the value,
  an exception is thrown
#>

# convert the property to the enum **AuthenticationLevel** 
[EnumAuthenticationLevel]$rawValue 

# get a comma-separated string:
[EnumAuthenticationLevel]$rawValue -join ',' 
#endregion

#region using operator "-as"

<#
  Note: the operator "-as" accepts values not defined
  by the enum and returns $null instead of throwing
  an exception
#>

$rawValue -as [EnumAuthenticationLevel]
#endregion

Enums must cover all possible values. If AuthenticationLevel returns a value that is not defined in the enum, an exception occurs. The exception reports the value that was missing in the enum. To fix, add the missing value to the enum.

Caption

STRING MAX 64 CHAR

Short textual description of the current object.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, Caption

CustomSurrogate

STRING

Name of the custom surrogate in which the in-process DCOM application is activated. If this value is NULL and the UseSurrogate key is TRUE, then the system provides a surrogate process.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, CustomSurrogate

Description

STRING

Textual description of the current object.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, Description

EnableAtStorageActivation

BOOLEAN

DCOM application retrieves the saved state of the application or begins from the state in which the application is first initialized.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, EnableAtStorageActivation

LocalService

STRING

Name for the services provided by the DCOM application.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, LocalService

RemoteServerName

WRITEABLE STRING

Name of the remote server where the application is activated.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, RemoteServerName

RunAsUser

STRING

Specific user account under which the application is to be run on activation.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, RunAsUser

ServiceParameters

STRING

Command-line parameters passed to the DCOM application. This is valid only if the application is written as a Windows-based service.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, ServiceParameters

SettingID

STRING MAX 256 CHAR

Identifier by which the current object is known.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, SettingID

UseSurrogate

WRITEABLE BOOLEAN

DCOM application can be activated as an out-of-process server by use of a surrogate executable file.

Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property AppID, UseSurrogate

Examples

List all instances of Win32_DCOMApplicationSetting
Get-CimInstance -ClassName Win32_DCOMApplicationSetting

Learn more about Get-CimInstance and the deprecated Get-WmiObject.

View all properties
Get-CimInstance -ClassName Win32_DCOMApplicationSetting -Property *
View key properties only
Get-CimInstance -ClassName Win32_DCOMApplicationSetting -KeyOnly

Selecting Properties

To select only some properties, pipe the results to Select-Object -Property a,b,c with a comma-separated list of the properties you require. Wildcards are permitted.

Get-CimInstance always returns all properties but only retrieves the ones that you specify. All other properties are empty but still present. That’s why you need to pipe the results into Select-Object if you want to limit the visible properties, i.e. for reporting.

Selecting Properties

The code below lists all available properties. Remove the ones you do not need:

$properties = 'AppID',
              'AuthenticationLevel',
              'Caption',
              'CustomSurrogate',
              'Description',
              'EnableAtStorageActivation',
              'LocalService',
              'RemoteServerName',
              'RunAsUser',
              'ServiceParameters',
              'SettingID',
              'UseSurrogate'
Get-CimInstance -ClassName Win32_DCOMApplicationSetting | Select-Object -Property $properties
Limiting Network Bandwidth

If you work remotely, it makes sense to limit network bandwidth by filtering the properties on the server side, too:

Get-CimInstance -Class Win32_DCOMApplicationSetting -Property $property | 
Select-Object -Property $property

Selecting Instances

To select some instances, use Get-CimInstance and a WMI Query. The wildcard character in WMI Queries is % (and not “*”).

The parameter -Filter runs a simple query.

Listing all instances where the property Caption starts with “A”
Get-CimInstance -Class Win32_DCOMApplicationSetting -Filter 'Caption LIKE "a%"' 
Using a WQL Query

The parameter -Query uses a query similar to SQL and combines the parameters -Filter and -Property. This returns all instances where the property Caption starts with “A”, and returns the properties specified:

Get-CimInstance -Query "SELECT AuthenticationLevel, Description, UseSurrogate, LocalService FROM Win32_DCOMApplicationSetting WHERE Caption LIKE 'a%'"

Any property you did not specify is still present but empty. You might need to use Select-Object to remove all unwanted properties:

Get-CimInstance -Query "SELECT AuthenticationLevel, Description, UseSurrogate, LocalService FROM Win32_DCOMApplicationSetting WHERE Caption LIKE 'a%'" | Select-Object -Property AuthenticationLevel, Description, UseSurrogate, LocalService

Accessing Remote Computers

To access remote systems, you need to have proper permissions. User the parameter -ComputerName to access one or more remote systems.

Authenticating as Current User
# one or more computer names or IP addresses:
$list = 'server1', 'server2'

# authenticate with your current identity:
$result = Get-CimInstance -ClassName Win32_DCOMApplicationSetting -ComputerName $list 
$result
Authenticating as Different User

Use a CIMSession object to authenticate with a new identity:

# one or more computer names or IP addresses:
$list = 'server1', 'server2'

# authenticate with a different identity:
$cred = Get-Credential -Message 'Authenticate to retrieve WMI information:'
$session = New-CimSession -ComputerName $list -Credential $cred

$result = Get-CimInstance Win32_DCOMApplicationSetting -CimSession $session

# remove the session after use (if you do not plan to re-use it later)
Remove-CimSession -CimSession $session

$result

Learn more about accessing remote computers.

Requirements

To use Win32_DCOMApplicationSetting, the following requirements apply:

PowerShell

Get-CimInstance was introduced with PowerShell Version 3.0, which in turn was introduced on clients with Windows 8 and on servers with Windows Server 2012.

If necessary, update Windows PowerShell to Windows PowerShell 5.1, or install PowerShell 7 side-by-side.

Operating System

Win32_DCOMApplicationSetting was introduced on clients with Windows Vista and on servers with Windows Server 2008.

Namespace

Win32_DCOMApplicationSetting lives in the Namespace Root/CIMV2. This is the default namespace. There is no need to use the -Namespace parameter in Get-CimInstance.

Implementation

Win32_DCOMApplicationSetting is implemented in CIMWin32.dll and defined in CIMWin32.mof. Both files are located in the folder C:\Windows\system32\wbem:

explorer $env:windir\system32\wbem
notepad $env:windir\system32\wbem\CIMWin32.mof