I tried from some free wifi sites and it works perfectly, but when if I use the ISP from home it says:
No UPnP device was found. You must manually configure your router & firewall to open port 2100 before you can host a game.
I tried even through my mobile ISP using hotspot tethered on my android but still the same problem.
Unfortunately I cannot change settings as I do not own the ISP at home, I am just a guest through an ISP of someone else.
So, am trying to use the ISP of my neighbour , though he is asking:
The 2100 port used by Warzone is TCP, UDP, or both?


Thanks for any help


