How do I translate an Excel file (does not need to be bilingual)

Very new user here. I need to translate an Excel file. I get an error message every time I try to make a project. My colleague is off skiing and can't answer: she writes

Did you tick the box that says to allow unsupported file versions (or something like that) before preparing the file?

I have no idea where this step is, have looked everywhere. Have googled. Can anyone guide me? I have done this before, just can't remember!

emoji
Parents Reply Children
No Data