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Add-LocalGroupMember

Adds members to a local group.
Add-LocalGroupMember [-Group*] <LocalGroup> [-Member*] <LocalPrincipal[]> [-Confirm] [-WhatIf] [<CommonParameters>]
Add-LocalGroupMember [-Name*] <String> [-Member*] <LocalPrincipal[]> [-Confirm] [-WhatIf] [<CommonParameters>]
Add-LocalGroupMember [-SID*] <SecurityIdentifier> [-Member*] <LocalPrincipal[]> [-Confirm] [-WhatIf][<CommonParameters>]

The Add-LocalGroupMember cmdlet adds users or groups to a local security group. All the rights and permissions that are assigned to a group are assigned to all members of that group.

Members of the Administrators group on a local computer have Full Control permissions on that computer. Limit the number of users in the Administrators group.

If the computer is joined to a domain, you can add user accounts, computer accounts, and group accounts from that domain and from trusted domains to a local group.

Parameters

-Confirm [<SwitchParameter>]

  • Default value is False
  • Accepts pipeline input False

Prompts you for confirmation before running the cmdlet.

-Group <LocalGroup>

  • This value is required
  • Default value is None
  • Accepts pipeline input False

Specifies the security group to which this cmdlet adds members.

-Member <LocalPrincipal[]>

  • This value is required
  • Default value is None
  • Accepts pipeline input ByPropertyName

Specifies an array of users or groups that this cmdlet adds to a security group. You can specify users or groups by name, security ID (SID), or LocalPrincipal objects.

-Name <String>

  • This value is required
  • Default value is None
  • Accepts pipeline input False

Specifies the name of the security group to which this cmdlet adds members.

-SID <SecurityIdentifier>

  • This value is required
  • Default value is None
  • Accepts pipeline input False

Specifies the security ID of the security group to which this cmdlet adds members.

-WhatIf [<SwitchParameter>]

  • Default value is False
  • Accepts pipeline input False

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

<CommonParameters>

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

Inputs
System.Management.Automation.SecurityAccountsManager.LocalGroup, System.String,
System.Security.Principal.SecurityIdentifier You can pipe a local principal, a string, or a SID to this cmdlet.
Outputs
None
This cmdlet does not generate any output.
Examples
  1. Add members to the Administrators group:
    PS C:\> Add-LocalGroupMember -Group "Administrators" -Member "Admin02", "MicrosoftAccount\[email protected]", "AzureAD\[email protected]", "CONTOSO\Domain Admins"
    

    This command adds several members to the local Administrators group. The new members include a local user account, a Microsoft account, an Azure Active Directory account, and a domain group. This example uses a placeholder value for the user name of an account at Outlook.com.

Additional Notes
 The PrincipalSource property is a property on LocalUser , LocalGroup , and LocalPrincipal * objects that 
 describes the source of the object. The possible sources are as follows:

 - Local

 - Active Directory

 - Azure Active Directory group

 - Microsoft Account PrincipalSource is supported only by Windows 10, Windows Server 2016, and later versions 
 of the Windows operating system. For earlier versions, the property is blank.
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