Another small one today, the script below will generate a nice csv export of every single group and it’s active user membership from Active Directory. The next step would likely be to turn it into a nice Pivot Table for reviewing.
It should be fairly straightforward to change it to show all users or all users & computers etc as required.
Requirements
- PowerShell Active Directory module – https://docs.microsoft.com/en-us/powershell/module/addsadministration/?view=win10-ps
- Read-Access to Active Directory
The Script
Replace the $ExportLocation variable with the location you want to export the result to.
$ExportLocation = "********\ADAxport.csv"
# Get a list of all Active Directory groups
$ADGroupNames = Get-ADGroup -filter * | sort Name | select Name, SamAccountName
$ExportData = @()
# Set the current index to 1 (Used for a progress bar)
$currentIndex = 1
# Loop through all groups
foreach($GroupName in $ADGroupNames) {
# Show a nice progress bar
Write-Progress -Id 0 -Activity "Building report from Active Directory" -Status "$currentIndex of $($ADGroupNames.Count)" -PercentComplete (($currentIndex / $ADGroupNames.Count) * 100)
# Get all membership of a given group and select only the users
$GroupMembership = Get-ADGroupMember -Identity $GroupName.SamAccountName -Recursive | Where {$_.objectClass -eq "user"} | select distinguishedName
# Retrieve all of the active users from the list, selecting only the name
$GroupMembershipUsers = $GroupMembership | ForEach-Object {Get-ADUser -Identity $_.distinguishedName -Properties Enabled} | select Name
# For each member add a new object to the ExportData array
foreach($User in $GroupMembershipUsers) {
$ExportData += [PSCustomObject]@{
Group = $GroupName.Name
User = $User.Name
}
}
# Increment the index
$currentIndex++;
}
# Reset the progress bar
Write-Progress -Id 0 -Activity " " -Status " " -Completed
$ExportData | Export-Csv -Path $ExportLocation -NoTypeInformation
Sysadmin Central 
Getting an error that $GroupName is not defined:
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