Select and delete that folder using File/Move to Trash (Cmd+Delete).
I suggest you try to clear the Excel cache to have a check. What version of Office are you using now? Please go to Excel and choose AboutĮxcel in Excel, check the version number.Ĭould you find the Excel file manually in Finder?Ĭould you please create a new Excel workbook for a test? Use OPTION key to drag its backup copy into Google Drive which is NOT synced, then check whether the issue occurs with this new workbook.