To hide gridlines on the screen:
1. From the Tools menu, select Options, and then select the View tab.
2. In Window options section, deselect the Gridlines box, and click OK.
To hide gridlines when printing:
1. From the File menu, select Page Setup, and then select the Sheet tab. By default, the checkbox for the Gridlines is deselected.
2. Click OK.
Screenshot // Hiding Gridlines on the Screen and When Printing
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I have followed the instructions and the gridlines still will not print. I did some changes to the workbook and after that time, I lost the gridlines for printing only. They display in the workbook.