[rutthenut]

Excel definitely opens CSV files, and Windows file associations tend to set that up by default. However, Excel then goes ahead with changing the content to often wrongly-assumed formats. My favourite hate is how it will convert mobile numbers from a string of digits to an unusable exponential-format number. Hey, it doesn't even set column widths to make the content visible!

[nojito]

You should use power query to load csvs into excel that way you can control the parsing of columns.