Hi Stephanie

Tools Options, General pane, uncheck R1C1 Reference.
She probably didn't do anything like that, the setting can follow a file.

HTH. Best wishes Harald

"Stephanie" skrev i melding
...
I have a coworker who changed the column labels from
letters to numbers. She does not know how she did it. Does
anyone know how to change them back to letters. The
columns are numbered in all of the worksheets that she
opens.

Stephanie