WooCommerce Orders & Customers Exporter v4.9
Purchase

Run Excel
Import the data using Data -> Import External Data (or Import from Text) -> Import Data
Select the csv file type and browse the directory where the .csv file is
In the import wizard, choose Delimited file type and change the File Origin to 65001 Unicode (UTF-8) (quite at the bottom of the list)
Click Next button and change the delimiter to comma (or semicolon, depens on which delimiter character you have selected)
Click on Finish button