This is kind of a repost, so I apologize, but the situation has changed since my original post in the Technical support forum. Plus this new information has led me to conclude it is probably not user side (or if it is, so esoteric that it's beyond me).
For some reason ICO keeps giving me the message "ICO has detected that most players cannot join your game this is most likely..." I know others have seen it, and host anyway, but not me! It is confirmed I CANNOT HOST. Other tell me they get an error when they try to join. But here's the thing: I'm not behind a router, and in frustration I've disabled my Windows Firewall. That's right, no router, no firewall. I'm behind a standard ethernet line in my apartment. Further research indicates that the port for hosting (6112) is open on my machine as I can host other games that use it just fine. I suspect it's some kind of bug or problem associated with T1 ethernet lines, like those in apartment complexes and Ironclad Online. I have fiddled with the user settings to get the ports to foward to other ports used by some other games...still no luck. I even turned off the UPnP forwarding just to see if it made a difference. Nope. If anyone knows of a solution, I'd appreciate it. I've never had to configure anything for any other multiplayer game before, and I host plenty in other games.
My system specs:
Hewlett Packard Media Center PC m7360n (all original hardware except video card).
Intel Pentium D 2.8 Ghz Dual Core Processor
Windows XP (always keep it up-to-date via WIndows Update)
Nvidia 7600 GS 512 MB edition.
2 GB of RAM
Ethernet Line to the Internet via LAN (Intel(R)PRO/100 VE Network Connection)
My ISP is institutional (provided by apartment complex...I have sent an e-mail to the tech guy, but don't expect an answer--plus all and I mean all my other two dozen games, many of which use the same ports, allow me to host and play online).
Disabled Windows Firewall
Umm...I have Symantec Security Anti-Virus Software and Spy Bot Search and Destroy.