try two things:

1) Make sure Window-Freeze Panes is OFF

2) make sure the column width is not 0.

hit F5
type A1 , hit OK
Format-Column Width



"Jo" wrote:

Hi,

In a worksheet I have column A is invisible and no matter what I do I
can't see it! "Hide/Unhide" didn't work!

How can I make column A visible?

Thanks,
jo