Invisible apostrophes in all of my excel files

I have been using Excel on a different (new for me) computer and I noticed that by default, every single cell in every file shows an apostrophe at the beginning of any text filled cell


They only appear on this computer, but they don't show up when i email them to others, or other computer I use. and they show up in every file I open, whether I created it or opened someone elses.

is there anyway to get rid of them.