My column C which I hid last week now won't unhide. I've tried right-clicking unhide, select all unhide, visibility, reformatting all the column widths: nothing works.
If you do this: Press F5, type C:C, click OK and then select (Start tab) Format, Column width and set it to e.g. 10, does it show? is View, Freeze panes set by any chance?
For anyone else who this might not have worked for, chances are that the missing columns may have been minimized. With your mouse, try grabbing the bar along the left edge of the last column that is visible. Hold down the right mouse button (you will see a double arrow pop up) and drag it to the right. The missing columns should show up.
