Hm... that's strange... Find any direct link in FF, and check manually, that it's accessible from IE/Opera via web. Don't hesitate to provide screenshots of broken pages. I have very weak telepathy skills, to understand the problem from description "it doesn't work"
Nobody of my regular 6000 users reported problem with IE. Try this advice:
https://vborg.vbsupport.ru/showpost....07&postcount=9
May be, apache work not as nginx with unknown extention types, no idea.