Layout 2018 can't export PDF error "There was a problem exporting to this file"

Thank you for the new info. We’re still looking into this. Had another user with Adobe Acrobat DC and they were having problems exporting to PDF. Seeing a “There was a problem exporting to this file.” error. He didn’t want to uninstall it, so we installed CutePDF Writer and selected Print to PDF via CutePDF and everything worked fine.