It's not protected by any chance is it? Did you also try clicking the
Format-Column-Unhide menu?

"WOLLAM" wrote:

Yes, to unhide a column would seem to be a basic task. However, my wife sent
me a file from work that has column C hidden. I used the "right-click,
unhide" method, but it didn't work. The file is not read-only. Is there
another way to unhide a column, or am I just missing something? As usual,
thank you everyone for your help.

Wollam