Once when that happened to me (with rows, though) some complication with
"Freeze Panes" prevented me from being able to unhide the rows. Try doing
"Windows . . . Unfreeze Panes" to see if that helps.

"Robin Krupp" wrote:

some one sent me a sheet in which i cant see columns a and b
i cant un hide them
i cant try to go to a1 and change column width
wooksheet or book isnt protected

but they print and show up in print preview


any ideas whats going on