Issue after export

Hey Guys

I have an issue by reading csv Files in Excel. If I import the csv File in Excel and use comma as delimiter symbol, the Excel file isn't correct.
That means that there are still some entrys written like in csv (example: ,,,,,admin,test,test). In some rows it is working and the comma is used to go in the next cleavage. How can I fix this bug?

Thanks for your help

MAAT