The actual addin is doing just that working only on CSV files . The helper plugin is the problem , it checks for updates regardless if Excel is opened through its icon or a file . I want to detect this , so if Excel was opened via a file it doesn ' t check for updates because the user wants to use that file if instead is opened by its icon the helper can go ahead and check . The problem is that the WorkbookOpen of the helper gets fired before the Excel opens the user selected files user double click a file Excel opens WorkbookOpen event for the helper is fired Excel is still opening the user file No way to detect this ? <| sep |> Used to like her quite a bit , think she probably lasted too long . Was surprised she ended up at S 1 , was hoping for a more extreme end to her career .