Summary: Use Windows PowerShell to add a user to a security group in Active Directory.

 How can I use Windows PowerShell to add a user to a security group in Active Directory?

 In Windows Server 2012 R2 or Windows Server 2008 R2, use the Add-ADGroupMember cmdlet.

To add a user with a SAM ID “John.Smith” to a security group called “Finance”:

ADD-ADGroupMember “Finance” –members “John.Smith”