I tried some of the simpler suggested solutions in those links and found one that worked, and that has now worked for those people who contacted me. 400% or more) – you’ll see the border, proving that it’s there. printing the PDF page the table is on – it usually prints fine, with all borders intact.Invariably, it’s not Word that’s at fault here, but the PDF and how it displays. The same table in the PDF is missing one or more horizontal borders – perhaps the top border of the table, or the bottom border where the table breaks across the page to the next page.The table in Word still has all its borders.I recall this issue from many years ago, and searching Google (see the links below) shows that it’s been around since at least 2004! This only happens on some tables, not all, and only for some horizontal borders, not all. In the past few days, I’ve had several calls or emails from work colleagues about some table border lines not displaying in a PDF created from a Word document.