When you want to remove the gridlines from your Microsoft Excel worksheet, update the page layout. Your worksheet options include removing these vertical and horizontal guides from view and also ...

To remove these lines from the spreadsheet, click the "View" tab and then uncheck the "Gridlines" box in the Show section of the ribbon.

Excel displays gridlines by default. These are the faint lines that show the borders around individual cells or within merged cells. These might not be displayed as dotted lines in the newer versions ...