This has been asked previously but not resolved. A friend tries to print a Costco certificate/coupon, it says connecting to printer but never does and then crashes Outlook 2016 IMAP. I forwarded the email to myself using Microsoft 365 and that same thing happens. Other emails print right away, no problem. I read something about an invalid character in the email that prevents printing? My work around was to save as, and picked .html, which I was able to print. Unfortunately this is not a workable solution for my elderly friend. Any suggestions , explanations or causes for this happening would be appreciated. Thank You.