missing cell lines

[CVDave]

When using Excel 2000, sometimes the cell gridlines do not show in print
preview or print even though they are visible on the worksheet. If I add a
gridline of a style different than the selected type, the newly added
gridline is visible and does print.

 

[David McRitchie]

Hi Dave,
If by sometimes, I would presume you have the draft option turn on, on your printer.
If by sometimes, you mean some cells, then you probably have a cell that is shaded
with a background color -- even if white it will override gridlines, and you would either
correct the situation or use borders.

Gridlines and borders
http://www.mvps.org/dmcritchie/excel/gridline.htm