I have tried everything here and still having the same problem.... kind of.... When I access my server over the Internet it gives me the issue but when I VPN into my network and access it with my LAN and port address it works just fine.
Internet = Port 80 Nat'd to 9000 on LAN
VPN = just accessing the site from port 9000
Just thought I would throw that in just incase it helps??? This pretty much resolved my issue because as long as I can upload fast, I don't mind if I have to use VPN vs. public access.