A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
I think I misunderstood you, you open the file in Excel, right? (Using File \ Open or Double-Click inside Windows-Explorer).
It is correct that this did not work as you expect, due to compatibility issues... Excel is downward compatible to ancient times.
There is a "new" way (since 10 years), import the CSV using Power Query and you get the result you want.
Maybe you're interested in article too:
Power Query - How to import a CSV file that does not match your locale - Microsoft Community
Andreas.