How can I prevent Excel VBA from opening multiple instances when running a script in Office 365?
I've encountered a strange issue with I'm following best practices but I'm working through a tutorial and I've searched everywhere and can't find a clear answer. I'm experiencing an scenario where my VBA script seems to open multiple instances of Excel every time I run it. My script is designed to pull data from multiple workbooks, and when I execute it, I notice that after a few iterations, there are several Excel processes running in the background. This is causing performance optimization and sometimes leading to 'Excel has stopped responding' errors. Here’s a snippet of my code: ```vba Sub ConsolidateData() Dim wb As Workbook Dim ws As Worksheet Dim sourcePath As String sourcePath = "C:\Data\" Dim fileName As String fileName = Dir(sourcePath & "*.xlsx") Do While fileName <> "" Set wb = Workbooks.Open(sourcePath & fileName) Set ws = wb.Sheets(1) '... (code to process data) wb.Close SaveChanges:=False fileName = Dir() Loop End Sub ``` I ensure there are no lingering instances from previous runs by attempting to close all Excel instances at the beginning of my script, like this: ```vba Sub CloseAllExcelInstances() Dim xlApp As Object On behavior Resume Next Set xlApp = GetObject(,"Excel.Application") If Not xlApp Is Nothing Then xlApp.Quit End If On behavior GoTo 0 End Sub ``` Despite this, I still find multiple instances opening. I tried adding a check at the start of my main subroutine to see if an instance is already running, but that did not help either. Any ideas on how to properly manage instances of Excel to prevent this from happening? For context: I'm using Vba on Linux. Am I missing something obvious? For reference, this is a production service. I'd be grateful for any help. I'm open to any suggestions. The stack includes Vba and several other technologies.