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JuanPablo Jofre|Last Updated: 3/6/2017
3 Contributors


Adds one or more Windows PowerShell snap-ins to the current session.


Add-PSSnapin [-Name] <String[]> [-PassThru] [<CommonParameters>]


The Add-PSSnapin cmdlet adds registered Windows PowerShell snap-ins to the current session. After the snap-ins are added, you can use the cmdlets and providers that the snap-ins support in the current session.

To add the snap-in to all future Windows PowerShell sessions, add an Add-PSSnapin command to your Windows PowerShell profile. For more information, see about_Profiles.

Beginning in Windows PowerShell 3.0, the core commands that are included in Windows PowerShell are packaged in modules. The exception is Microsoft.PowerShell.Core, which is a snap-in (PSSnapin). By default, only the Microsoft.PowerShell.Core snap-in is added to the session. Modules are imported automatically on first use and you can use the Import-Module cmdlet to import them.


Example 1

PS C:\> add-PSSnapIn Microsoft.Exchange, Microsoft.Windows.AD

This command adds the Microsoft Exchange and Active Directory snap-ins to the current session.

Example 2

PS C:\> get-pssnapin -registered | add-pssnapin -passthru

This command adds all of the registered Windows PowerShell snap-ins to the session. It uses the Get-PSSnapin cmdlet with the Registered parameter to get objects representing each of the registered snap-ins. The pipeline operator (|) passes the result to Add-PSSnapin, which adds them to the session. The PassThru parameter returns objects that represent each of the added snap-ins.

Example 3

The first command gets snap-ins that have been added to the current session, including the snap-ins that are installed with Windows PowerShell. In this example, ManagementFeatures is not returned. This indicates that it has not been added to the session.
PS C:\> get-pssnapin

The second command gets snap-ins that have been registered on your system (including those that have already been added to the session). It does not include the snap-ins that are installed with Windows PowerShell.In this case, the command does not return any snap-ins. This indicates that the ManagementFeatures snapin has not been registered on the system.
PS C:\> get-pssnapin -registered

The third command creates an alias, "installutil", for the path to the InstallUtil tool in .NET Framework.
PS C:\> set-alias installutil $env:windir\Microsoft.NET\Framework\v2.0.50727\installutil.exe

The fourth command uses the InstallUtil tool to register the snap-in. The command specifies the path to ManagementCmdlets.dll, the file name or "module name" of the snap-in.
PS C:\> installutil C:\Dev\Management\ManagementCmdlets.dll

The fifth command is the same as the second command. This time, you use it to verify that the ManagementCmdlets snap-in is registered.
PS C:\> get-pssnapin -registered

The sixth command uses the Add-PSSnapin cmdlet to add the ManagementFeatures snap-in to the session. It specifies the name of the snap-in, ManagementFeatures, not the file name.
PS C:\> add-pssnapin ManagementFeatures

To verify that the snap-in is added to the session, the seventh command uses the Module parameter of the Get-Command cmdlet. It displays the items that were added to the session by a snap-in or module.
PS C:\> get-command -module ManagementFeatures

You can also use the PSSnapin property of the object that the Get-Command cmdlet returns to find the snap-in or module in which a cmdlet originated. The eighth command uses dot notation to find the value of the PSSnapin property of the Set-Alias cmdlet.
PS C:\> (get-command set-alias).pssnapin

This example demonstrates the process of registering a snap-in on your system and then adding it to your session. It uses ManagementFeatures, a fictitious snap-in implemented in a file called ManagementCmdlets.dll.



Specifies the name of the snap-in. (This is the Name, not the AssemblyName or ModuleName.) Wildcards are permitted.

To find the names of the registered snap-ins on your system, type: "get-pssnapin -registered".

Type: String[]
Parameter Sets: (All)

Required: True
Position: 1
Default value: None
Accept pipeline input: True (ByPropertyName)
Accept wildcard characters: True


Returns an object representing each added snap-in. By default, this cmdlet does not generate any output.

Type: SwitchParameter
Parameter Sets: (All)

Required: False
Position: Named
Default value: False
Accept pipeline input: False
Accept wildcard characters: False


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



You cannot pipe objects to Add-PSSnapin.


None or System.Management.Automation.PSSnapInInfo

When you use the PassThru parameter, Add-PSSnapin returns a PSSnapInInfo object that represents the snap-in. Otherwise, this cmdlet does not generate any output.







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