Remove-LocalUser

I have to run first --

powershell Set-ExecutionPolicy RemoteSigned

Then this powershell script

  Function GetChoice
{
    #Prompt message
    $Caption = "Delete Confirming."
    $Message = "Do you want to delete the unused user folder?"
    $Choices = [System.Management.Automation.Host.ChoiceDescription[]]`
    @("&Yes","&No")
    [Int]$DefaultChoice = 0
    $ChoiceRTN = $Host.UI.PromptForChoice($Caption, $Message, $Choices, $DefaultChoice)
    Switch ($ChoiceRTN)
    {
        0 	{$True}
        1  	{break}
    }
}

Function isException($Foldername) 
{
    Switch($Foldername)
	{
		"All Users"
		{ $True} 
		"Default User" 
		{ $True }
		"Default" 
		{ $True }
		"LocalService" 
		{ $True }
		"NetworkService" 
		{ $True } 
		"Administrator" 
		{ $True }
		"Adm-Pass" 
		{ $True }
		"AppData" 
		{ $True }
		"Classic .NET AppPool" 
		{ $True}
		"Public" 
		{ $True}
		default 
		{ $False}
	}
}

#Get user folder
If(Test-Path -Path "C:\Documents and Settings\")
{
	$UserParentFolder = "C:\Documents and Settings\"
}

If(Test-Path -Path "C:\Users\")
{
	$UserParentFolder = "C:\Users\"
}
#set unused days
$PeriodDays = 100 

$Result = @()
#get all user folders
$userFolders = Get-ChildItem -Path $UserParentFolder 

Foreach($Folder in $userFolders)
{
	#get lastaccesstime
	$LastAccessTime = $Folder.LastAccessTime
	#Get date
	$CurrentDate = Get-Date 
	$Tim = New-TimeSpan $LastAccessTime $CurrentDate 
	$Days = $Tim.days
	#Compare current date and lastaccesstime 
    If((isException $Folder.Name )-eq $false -and  ($Days -gt $PeriodDays) )
	{
	$temp = New-Object  psobject -Property @{
		"FileName" = $Folder.FullName;
		"LastAccessTime" = $Folder.LastAccessTime;
		"UnusedDays" = $Days
		}
		$Result += $Temp
	}
	
}
If($Result)
{
	$Result
	If(GetChoice)
	{
		foreach($Folder in $Result)
		{
			try
			{
				#Remove user folder
				$path = $Folder.FileName 
				cmd.exe /c "RD /S /Q `"$path`""
				If((test-path $path) -eq $false)
				{
					Write-Host "Delete unused user folder $path successfully!"
				}
			
			}
			Catch
			{
				Write-Error $_
				
			}
		}
	}
	
}

Found some powershell script from another user on microsoft website and built on it. Since I have it locked down by GPO to not allow scripts to run, I had to add powershell Set-ExecutionPolicy RemoteSigned

Well.. I dont believe in default timestamps (win update or pdq deploy changes lots of stuff under inactive users folders and files). Second if you just delete useraccount folder, then you need also delete userprofile in registry, otherwise next time same name (SID) user can login only with temp profile. Better use DelProf2.exe. I think this forum have also some notes on that.

I am using DelProf2 domainwide but only with GPO > Scheduled Task, run on system startup, powershell -ExecutionPolicy Bypass \domain\netlogon\DelProf.ps1 with my specific arguments and code like "timestamp" (inactive 90 days). I am taking it from one specific shortcut on user desktop which is only created or updated by gpo when user is logged in.

You can also use DelProf2 with Deploy easily for local users etc. As I wrote - I think this forum have also some notes on that.

Have phun!