The Microsoft Windows PowerShell script below will the export the list of users from a Microsoft Active Directory group to a notepad (.txt) file. You may modify the script to provide a file format of your choice.

<#

.SYNOPSIS
This script will provide the members of a Microsoft Active Directory group and export them to a notepad (.txt) file.
.DESCRIPTION
This script automates the process of exporting the users in a Microsoft Active Directory group.
.EXAMPLE
N/A.
.AUTHOR
Written by Noel Enrique Alvarez on Thursday, March 17, 2016.
#>

#Import the Microsoft Active Directory module
Import-Module ActiveDirectory

#Request the name of the Microsoft Active Directory group
$GROUP = Read-Host “What is the name of the Microsoft Active Directory group?”

#Export the members of the Microsoft Active Directory group and export them.
Get-ADGroupMember -identity $GROUP | Select Name, SamAccountName | out-file -filepath “<<<INSERT PATH>>>\$GROUP.txt”