All solutions known so far are in this thread:
http://forums.ubi.com/eve/forums/a/tpc/f/2231031415/m/4431051415
Basically: if you have a router: forward the ports mentioned in Firebird's thread, disable uPnP on your router (and disable the SSDP service if you want to run a server). Maybe you also have to disable the router's firewall. If you have a software firewall/AV/security suite: switch it off completely before you connect to the UBI-server, then log-in with your username/pw, as soon as you`re in you can (usually) reactivate your security software again, so no need to play shields down all the time.<div class="ev_tpc_signature">
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"The metric system is the tool of the devil! My car gets 40 rods to the hogshead and that's the way I likes it!"