PC cannot print to Email using Outlook - vb.net

Question

I am having a very strange problem where one of the computers in our company is unable to print an MS Access report and attach it to an email. I have done a lot of research however most of it doesn't apply to my case as this issue is happening only on one PC out of the 20+ we have in the company. This is a print screen of the error we are getting:
The code I am using is the following:
If PrintMode = "Email" Then
Dim mAcc As New Access.Application
Dim DefaultPrinterName As New String("")
Dim PDFPrinterName As New String("")
Maintain__Loading.Setup()
Try
mAcc.CloseCurrentDatabase()
mAcc.DoCmd.Close()
System.Runtime.InteropServices.Marshal.ReleaseComObject(mAcc)
mAcc = Nothing
Catch ex As Exception
End Try
Dim startInfo As New ProcessStartInfo("C:\Program Files (x86)\PDFCreator\PDFCreator.exe") 'starts PDF Creator so it can save the report to PDF
startInfo.WindowStyle = ProcessWindowStyle.Minimized
Process.Start(startInfo)
AttachmentName = "C:\PDFs\pdf.pdf" 'PDF has been set up to save all files as TestPrint.pdf
PDFPrinterName = "PDFCreatorDistribution"
'------ GETS DEFAULT PRINTER NAME -------
Dim oPS As New System.Drawing.Printing.PrinterSettings
Try
DefaultPrinterName = oPS.PrinterName
Catch ex As System.Exception
DefaultPrinterName = ""
Finally
oPS = Nothing
End Try
'sets PDFCreatorDistribution as default printer
Shell(String.Format("rundll32 printui.dll,PrintUIEntry /y /n ""{0}""", PDFPrinterName))
Try
If Not UCase(Trim(Database)) = "TEST" Then
mAcc.OpenCurrentDatabase("R:\Distribution\Access\Distribution-Reports.mde")
Else
mAcc.OpenCurrentDatabase("R:\Distribution\Access\Test-Distribution-Reports.mde")
End If
Catch ex As Exception
MsgBox(Err.Description)
End Try
If IO.File.Exists(AttachmentName) Then 'if file exists it deletes it
IO.File.Delete(AttachmentName)
End If
Select Case Trim(Grid.Rows(Grid.CurrentRow.Index).Cells("Passing1Type").Value.ToString)
Case "String"
mAcc.DoCmd.OpenReport(Trim(Grid.Rows(Grid.CurrentRow.Index).Cells("MacroName").Value.ToString), Access.AcView.acViewPreview, , Trim(Grid.Rows(Grid.CurrentRow.Index).Cells("Passing1").Value.ToString) & " = '" & Number & "'", Access.AcWindowMode.acWindowNormal)
Case "Numeric"
mAcc.DoCmd.OpenReport(Trim(Grid.Rows(Grid.CurrentRow.Index).Cells("MacroName").Value.ToString), Access.AcView.acViewPreview, , Trim(Grid.Rows(Grid.CurrentRow.Index).Cells("Passing1").Value.ToString) & " = " & Number & "", Access.AcWindowMode.acWindowNormal)
End Select
mAcc.DoCmd.PrintOut()
mAcc.Visible = True
mAcc.CloseCurrentDatabase()
mAcc.DoCmd.Close()
System.Runtime.InteropServices.Marshal.ReleaseComObject(mAcc)
mAcc = Nothing
Do While Not System.IO.File.Exists("C:\PDFs\pdf.pdf")
Threading.Thread.Sleep(2000) 'if doesn't exist, wait for 2 seconds
If Not System.IO.File.Exists("C:\PDFs\pdf.pdf") Then 'if doesn't exist, wait for another 2 seconds
Threading.Thread.Sleep(2000)
End If
If Not System.IO.File.Exists("C:\PDFs\pdf.pdf") Then 'if doesn't exist, wait for another 2 seconds
Threading.Thread.Sleep(2000)
End If
If Not System.IO.File.Exists("C:\PDFs\pdf.pdf") Then 'shows error message
MsgBox("Error creating PDF. Please try again")
Exit Do
End If
Loop
'sets default printer name
Shell(String.Format("rundll32 printui.dll,PrintUIEntry /y /n ""{0}""", DefaultPrinterName))
'saves file as
Dim saveFileDialog As New SaveFileDialog()
saveFileDialog.Filter = "PDF files (*.pdf)|*.pdf|All files (*.*)|*.*"
If saveFileDialog.ShowDialog() = DialogResult.OK Then 'if OK clicked
FileName = saveFileDialog.FileName 'get file name and move to new location/name
FileNameOnly = System.IO.Path.GetFileName(FileName)
Try
If IO.File.Exists(FileName) Then 'if file exists it deletes it before saving
IO.File.Delete(FileName)
End If
IO.File.Move(AttachmentName, FileName)
Catch ex As Exception
MsgBox(Err.Description)
Finally
Shell(String.Format("rundll32 printui.dll,PrintUIEntry /y /n ""{0}""", DefaultPrinterName))
End Try
Else 'user clicked cancel
FileName = ""
End If
Maintain__Loading.Dispose()
'GETS TO HERE AND AFTER THIS I GET THE ERROR MESSAGE DISPLAYED IN THE IMAGE ABOVE
If IO.File.Exists(FileName) Then
Try
Send_Email()
Catch ex As Exception
MsgBox(Err.Description)
End Try
Else
If Not FileName = "" Then MsgBox("An error has occured. Please try again")
End If
Shell(String.Format("rundll32 printui.dll,PrintUIEntry /y /n ""{0}""", DefaultPrinterName))
PhysicallyPrintedOrEmailed = True
End If 'Printmode = Email
I found a thread that I thought would solve my problem however unfortunately it didn't:
Unable to cast COM object - Microsoft outlook & C#
Any advice will be greatly appreciated

Answer 1

You have hardcoded the path to the program files location so if you are running this on a 32 bit machine it won't find the PDFCreator.exe.
Use Environment.GetFolderPath to find the path on the machine instead of hard coding it.`
Also it might help if you wrap the whole thing in a Try Catch block to see if there is an error somewhere you didn't expect

Answer 2

I have managed to solve this. Probably not the best way but we reinstalled Outlook and this solved the issue. We believe another program (most likely one that syncs Outlook contacts with phone) that has been installed has corrupted something. Thanks anyway :)