Anyone managed to get this KKND 2 working in multiplayer? Just bought it under the impression that multiplayer worked and I cannot seem to get it working for love nor money.

Been there, done that, gone so far as to download things like Tunngle to try and get connected via there ip address. Still nothing. Nothing we have tried has worked. what is worse is that we are trying to play it in the same house over our internal network and nothing we do seems to work.

Network configuration can generally be tricky, because a lot of software (firewalls, protocols, services etc.) is to be taken into account.

So at first, keep it simple to narrow the problem down.
Forget all the fancy stuff like Tunnels or whatever. This is an old game and needs old school network configuration.

You said, you're in the same house. Is it a Local Area Network or do you try to connect via Internet (which is possible, even if you're in the same house)?

Within a LAN, I'd suggest:
1. Turn off your Internet connection, so we can safely try some things
2. Turn off all programs that are messing with network traffic:
a) Windows firewall
b) Any other Firewall or Security Suite/Anti-Virus Software
c) Think about further programs that might interfere with networking on your PC
3. Make sure both computers have matching IP addresses
a) They must be equal except for the last number (e.g. 192.168.0.20 and 192.168.0.33)
b) They must be different from any other IP address in your network (e.g. network printer, NAS, mobile, etc.)
c) You see your IP address by opening the Windows shell and using the command ipconfig
4. Check if your computers can "see" each other
a) Open the Windows shell and use the ping command (e.g. ping 192.168.0.33). Try pinging your buddy's PC by using his IP address.
b) You should get a response from that PC
c) Now let your buddy ping you
5. The gaming host must be accessible at port 47624
a) When pinging is successful and you've turned off all network filter software, this shouldn't be a problem within a local area network. Try starting a multiplayer game

Let me know, if you don't know how to do some things I've suggested, so I can give you more details.
Also share some information about the PCs you are using (operating system, details about the network etc.), maybe there's something I've missed so far.

I can't get it to work in skirmish. Kaos mode if you will, reverting back to KKND1. I try to play it Solo and it's an auto win due to "No units left".....??? Also, I've tried the TCP/IP which works, for about 10 mins or so, then all of a sudden I can't build anymore units. I forget exactly what the in game message says, something along the lines of "Could not create unit" or something. And no this isn't due to maximum number of units. You can't build that many in that short of time. Plus the max unit bar is still green. Is there a patch out? I have seen multiplayer patches but I don't know if they would address this issue in any way, and even still I would need to know what version the GOG one is, since there is a patch available for different versions. (English German French etc.)
*Edit*
I re-installed and it lets me do Solo in multiplayer now. No idea what the problem was.