FYI - I wanted to say that this solution also worked for me (unchecking the "Enable Accessibility and Reflow with tagged Adobe PDF" box in the Acrobat Preferences tab in excel). One thing that I did figure out additionally that I thought may prove helpful for some others: if you have used "Insert Links" to create your links in excel, and they are linking to a specific cell in excel, make sure the cell you are linking to falls within the Print Area of your Page Layout.