Stop-DisconnectedSessions.ps1

function Get-TSSessions {
    $qwinsta = (query user)  -replace "IDLE TIME","IDLETIME" -replace "LOGON TIME","LOGONTIME"
    $csv = $qwinsta | ForEach-Object {
        $_.Trim() -replace "\s+",","
    } | ConvertFrom-Csv
	ForEach ($obj in $csv) {
		If ($obj.id -eq 'Disc') {
			$obj.logonTime = $obj.IdleTime
			$obj.IdleTime = $obj.State
			$obj.State = $obj.id
			$obj.id = $obj.sessionname
			$obj.sessionname = $null
		}
		Switch ($obj.IdleTime) {
			{$_ -eq '.'} { $obj.IdleTime = $null}
			{$_ -match ":"} { $obj.IdleTime = New-TimeSpan -hours $obj.idletime.split(":")[0] -Minutes $obj.idletime.split(":")[1] }
			default { $obj.IdleTime = New-TimeSpan -Minutes $obj.idletime }
		}
	}
	$csv
}

Get-TSSessions|Where {$_.idletime -gt (new-timespan -hours 2) -and $_.state -eq "Disc"}| % {
    Write-Host "Logging off $($_.username) who was idle for $($_.idletime) since $($_.logontime) at $(get-date)" | Out-File c:\de\disconnectedlogoffs.txt -Append
    logoff $($_.id)
}