Creates a new property for an item and sets its value.
New-ItemProperty [-Path*] <String[]> [-Name*] <String> [-Credential [<PSCredential>]] [-Exclude [<String[]>]][-Filter [<String>]] [-Force] [-Include [<String[]>]] [-PropertyType [<String>]] [-Value [<Object>]] [-Confirm][-WhatIf] [-UseTransaction [<SwitchParameter>]] [<CommonParameters>]
New-ItemProperty [-Name*] <String> [-Credential [<PSCredential>]] [-Exclude [<String[]>]] [-Filter [<String>]][-Force] [-Include [<String[]>]] [-PropertyType [<String>]] [-Value [<Object>]] -LiteralPath* <String[]> [-Confirm][-WhatIf] [-UseTransaction [<SwitchParameter>]] [<CommonParameters>]

The New-ItemProperty cmdlet creates a new property for a specified item and sets its value. Typically, this cmdlet is used to create new registry values, because registry values are properties of a registry key item.

This cmdlet does not add properties to an object. To add a property to an instance of an object, use the Add-Member cmdlet. To add a property to all objects of a particular type, modify the Types.ps1xml file.

-Credential [<PSCredential>]

Specifies a user account that has permission to perform this action. The default is the current user.

Type a user name, such as User01 or Domain01User01, or enter a PSCredential object, such as one generated by the Get-Credential cmdlet. If you type a user name, this cmdlet prompts you for a password.

This parameter is not supported by any providers installed with Windows PowerShell.

-Exclude [<String[]>]

Specifies items that this cmdlet omits. Wildcard characters are permitted.

-Filter [<String>]

Specifies a filter in the format or language of the provider. The value of this parameter qualifies the Path parameter.

The syntax of the filter, including the use of wildcard characters, depends on the provider. Filters are more efficient than other parameters, because the provider applies them when it retrieves the objects instead of having Windows PowerShell filter the objects after they are retrieved.

-Force [<SwitchParameter>]

Forces the cmdlet to create a property on an object that cannot otherwise be accessed by the user. Implementation varies from provider to provider.

-Include [<String[]>]

Specifies items that this cmdlet includes. The value of this parameter qualifies the Path parameter. Enter a path element or pattern, such as *.txt. Wildcard characters are permitted.

-LiteralPath <String[]>

Specifies a path of the item property. The value of the LiteralPath parameter is used exactly as it is typed. No characters are interpreted as wildcard characters. If the path includes escape characters, enclose it in single quotation marks. Single quotation marks tell Windows PowerShell not to interpret any characters as escape sequences.

-Name <String>

Specifies a name for the new property. If the property is a registry entry, this parameter specifies the name of the entry.

-Path <String[]>

  • This value is required

Specifies the path of the item. This parameter identifies the item to which this cmdlet adds the new property.

-PropertyType [<String>]

Specifies the type of property that this cmdlet adds. The acceptable values for this parameter are:

— String. Specifies a null-terminated string. Equivalent to REG_SZ. — ExpandString. Specifies a null-terminated string that contains unexpanded references to environment variables that are expanded when the value is retrieved. Equivalent to REG_EXPAND_SZ. — Binary. Specifies binary data in any form. Equivalent to REG_BINARY. — DWord. Specifies a 32-bit binary number. Equivalent to REG_DWORD. — MultiString. Specifies an array of null-terminated strings terminated by two null characters. Equivalent to REG_MULTI_SZ. — Qword. Specifies a 64-bit binary number. Equivalent to REG_QWORD. — Unknown. Indicates an unsupported registry data type, such as REG_RESOURCE_LIST.

-Value [<Object>]

Specifies the property value. If the property is a registry entry, this parameter specifies the value of the entry.

-Confirm [<SwitchParameter>]

  • Default value is false

Prompts you for confirmation before running the cmdlet.Prompts you for confirmation before running the cmdlet.

-WhatIf [<SwitchParameter>]

  • Default value is false

Shows what would happen if the cmdlet runs. The cmdlet is not run.Shows what would happen if the cmdlet runs. The cmdlet is not run.

-UseTransaction [<SwitchParameter>]

  • Default value is false

Includes the command in the active transaction. This parameter is valid only when a transaction is in progress.


This cmdlet supports the common parameters: Verbose, Debug,ErrorAction, ErrorVariable, WarningAction, WarningVariable,OutBuffer, PipelineVariable, and OutVariable.



You cannot pipe input to this cmdlet.



New-ItemProperty returns a custom object that contains the new property.

  1. Add a registry entry:
    PS C:> New-ItemProperty -Path "HKLM:SoftwareMyCompany" -Name "NoOfEmployees" -Value 822
    PS C:>  Get-ItemProperty "HKLM:SoftwareMyCompany"
       PSPath        : Microsoft.PowerShell.CoreRegistry::HKEY_LOCAL_MACHINEsoftwaremycompany
       PSParentPath  : Microsoft.PowerShell.CoreRegistry::HKEY_LOCAL_MACHINEsoftware
       PSChildName   : mycompany
       PSDrive       : HKLM
       PSProvider    : Microsoft.PowerShell.CoreRegistry
       NoOfLocations : 2
       NoOfEmployees : 822

    This command adds a new registry entry, NoOfEmployees, to the MyCompany key of the HKLM:Software hive.

    The first command uses the Path parameter to specify the path of the MyCompany registry key. It uses the Name parameter to specify a name for the entry and the Value parameter to specify its value.

    The second command uses the Get-ItemProperty cmdlet to see the new registry entry.

  2. Add a registry entry to a key:
    PS C:> Get-Item -Path "HKLM:SoftwareMyCompany" | New-ItemProperty -Name NoOfLocations -Value 3

    This command adds a new registry entry to a registry key. To specify the key, it uses a pipeline operator (|) to send an object that represents the key to New-ItemProperty.

    The first part of the command uses the Get-Item cmdlet to get the MyCompany registry key. The pipeline operator sends the results of the command to New-ItemProperty, which adds the new registry entry, NoOfLocations, and its value, 3, to the MyCompany key.

    This command works because the parameter-binding feature of Windows PowerShell associates the path of the RegistryKey object that Get-Item returns with the LiteralPath parameter of New-ItemProperty. For more information, see about_Pipelines.

Additional Notes
 New-ItemProperty is designed to work with the data exposed by any provider. To list the providers available in 
 your session, type Get-PSProvider. For more information, see about_Providers.
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