Log off Every Windows User

force_logoff.ps1

$computer = $env:computername
$sessions = qwinsta /server:$computer
$sessions = $sessions[1..$($sessions.Count - 1)]
foreach ($Result in $sessions) {
    $userName = $Result.Substring(19,22).Trim()
    $id = $Result.Substring(41,7).Trim()                         
    if ($userName -ne ""){
                    rwinsta /server:$computer $id

    }
}