in the file info panel you’ll see that this particular file is opened by whatever app you chose for it by default. Now, while still holding those keys choose “Other.” from the drop down menu, navigate to the exact instance of the app and Choose that certain app bundle you want to open CSVs with After it opens your file and you are happy with the result, focus that CSV of yours in Finder and press Cmd+I. Step 1: -tap any CSV file in finder, then highlight “open with” and press as well (notice how “open with” turns into “always open with”. Here’s how you make sure you open all your CSVs with the desired versiоn: You definitely got a different instance of Excel somewhere in your system.