Hi Don - Thanks so much for your reply. I have selected all the proper settings within Word. In the past, since I've owned the printer, I never had to select an envelope size...the printer knew what was being fed. But I did try selecting the #10 option and it made no difference. I went through all the steps on HP's web site for troubleshooting blank pages which was the closest situation to what I'm experiencing. Because it prints the return address info just fine, it seems like the printer is ignoring what is in the delivery address field. I must be overlooking something that got de-selected because it just makes no sense. I am now wondering if I should uninstall the printer and re-install it. I've been avoiding that because it's such a pain: it's such a strict sequence of when to plug in the power, USB cable, etc.