If we enter it three times, we'll get an unauthorized CD key error when connecting to a server. I've yet to install the GOG version as I am waiting for the Mysteries of Westgate DLC to be fixed first, but I hear there is a program that you can enter your keys in to change them for you instead, this would probably in your install folder or under start menu under something like I'm having this problem also, however this solution doesn't work because we are only provided with one CD Key. Replace the keys here with the corresponding keys in your GOG owned games list. To manually change your CD-Key, go to where your Neverwinter Nights 2 was installed and open 'nwncdkey.ini' it will looking something like this (Obviously I have changed the keys to 0's): Your multiplayer CD-Keys are stored in your owned games list, click on Neverwinter Nights 2, and they are listed under 'My serial number:' And ask Gog client support for individual player keys for each of your copies that you purchased through them, the default one the Gog version of the game installs with isnt unique and wont work for multi. Rhiyo: You will need to change your cd-key if you are playing multiplayer either on LAN or the internet. You need to install the community client extension to have a working multiplayer lobby.
