Gauss said: For those that have issues uploading a PDF, is this multiple PDFs or just one? If it is multiple PDFs are they from the same source or different sources? Not all PDFs are created equal. For example, s ome are encrypted. I thought I'd tried a couple different ones before posting, but don't know for sure. However, re-downloaded UA2022-Expert-Classes.pdf , tried to upload it and it still failed. I then tried a couple of random pdfs in my downloads folder. Neither of those had issues. My case must just be the one file then.