I have a user that has trouble opening some PDF attachments. She can open some PDF's but not others. There doesn't seem to be a common thred between the pdf's either. When she gets a PDF that won't open it comes up with a very plain error message that says "Access is denied" the title of the error window is just "Microsoft Office Outlook" I am not sure what could be causing this. She is allowed to open other attachments without issue. Just certain PDF documents are giving her trouble.