Many of the log files I get are in CSV format. For me to view them in Excel, I have had to use the “Text to Columns” feature. One of my security applications is now sending me such a file daily. CSV2Excel.vbs converts CSV files to XLS. You can drag a CSV file onto the script to convert. It also accepts a command line. From the command line by default, the original CSV file is deleted.
This requires Excel on the computer that runs the script. Version 2 adds support for XLSX, see line 25 to set saveAs type.