Powershell, close Excel - excel

Question

I have the following code and it works perfectly except it's not closing Excel properly. It's leaving an Excel process running.
Is there a way to close Excel properly without killing the process?
Since i'm using other Excel files while running this script i can not kill all active Excel processes.
I think i tried everything i found online.
$WorkDir = "D:\Test\QR_ES\RG_Temp"
$BGDir = "D:\Test\QR_ES\3_BG"
$File = "D:\Test\QR_ES\4_Adr_Excel\KD_eMail.xlsx"
$SentDir = "D:\Test\QR_ES\RG_Temp\Sent\Dunning"
chdir $WorkDir
$firstPageList = Get-ChildItem "$WorkDir\1*.pdf" -File -Name
ForEach ($firstPage in $firstPageList)
{
$secondPage = "$BGDir\BG_RG.pdf"
$output = "Dunn-$firstPage"
invoke-command {pdftk $firstPage background $secondPage output $output}}
del 1*.pdf
gci $WorkDir\Dunn-*.pdf | rename-item -newname {$_.Name.Substring(5)} -Force
$Excel = New-Object -ComObject Excel.Application
$Excel.visible = $false
$Workbook = $Excel.workbooks.open($file)
$DunnList = Get-ChildItem "$WorkDir\1*.pdf" -File -Name
ForEach ($Dunn in $DunnList)
{
$Worksheets = $Workbooks.worksheets
$Worksheet = $Workbook.Worksheets.Item("KD_eMail")
$Range = $Worksheet.Range("A1").EntireColumn
$DunnSearch = $Dunn.Substring(0,5)
$SearchString = $DunnSearch
$Search = $Range.find($SearchString)
$Recipient = $Worksheet.Cells.Item($Search.Row, $Search.Column + 1)
$Msg = "<span style='font-family:Calibri;font-size:12pt;'>Test</span>"
$Outlook = New-Object -ComObject Outlook.Application
$namespace = $Outlook.GetNameSpace("MAPI")
$namespace.Logon($null, $null, $false, $true)
$EmailFrom = ('test#test.com')
$account = $outlook.Session.Accounts.Item($EmailFrom)
$Mail = $Outlook.CreateItem(0)
$Mail.HTMLBody = $Msg
$Mail.Subject = "OP - $SearchString"
$Mail.To = $Recipient
function Invoke-SetProperty {
param(
[__ComObject] $Object,
[String] $Property,
$Value
)
[Void] $Object.GetType().InvokeMember($Property,"SetProperty",$NULL,$Object,$Value)
}
Invoke-SetProperty -Object $mail -Property "SendUsingAccount" -Value $account
$Mail.Attachments.Add("$WorkDir\$Dunn")
$Mail.Save()
$Mail.close(1)
$Mail.Send()}}
$workbook.close($false)
$Excel.Quit()
chdir $WorkDir
del 1*.pdf

Answer 1

See this post:
https://stackoverflow.com/a/35955339/5329137
which is not accepted as an answer, but I believe is the full, correct way to close Excel.

Answer 2

This is what did it for me:
$FilePID = (Get-Process -name Excel | Where-Object { $_.MainWindowTitle -like 'FileName.xlsx*' }).Id
$Workbook.Save()
$Workbook.close($false)
Stop-Process $FilePID

Answer 3

Elaborating on #ASD's answer, since the MainWindowTitle doesn't (always) include the file suffix (.xlsx) you may have to strip that when comparing it to the filename. I'm using -replace to use a Regex match of everything before the last dot.
$excelPID = (Get-Process -name Excel | Where-Object { $_.MainWindowTitle -eq $fileName -replace '\.[^.]*$', '' }).Id
$workbook.Close()
Stop-Process $excelPID