Not able to Validate. Only Demo.

[base64]

Is anyone else failing to validate upon first starting DEFCON under linux? It locks me into the demo even though I bought the full game.

[Freybear3]

same problem here :(

[schafmatt]

I got same problem to, wtf. And i can't fing a way to enter cd-key either

[1vitunhailee]

Same ♥♥♥♥ here too ... Says Key invalid ... I deleted the authkey but it did not help either ... This happens on OSX

[D8ve]

Same here. This was the first game I bought on steam, haven't played it for like five years, istalled today and discovered i don't own the game. But when I try to buy it, it says I already own it.

[Sneakywolf117]

im in the same boat to only i dont even have an authkey in the first place

[Mr. Eaten]

the damn game can't even recognized being tied to a steam account? pathetic support. This basic game has more DRM then their latest game which has almost none. If not zero.

[tomatocultivator]

Im on win8 and it said after installing on my other computer its invalid

[Quinn]

Windows 7 here, same problem. Although it has worked for me before; it just started not working when I reinstalled windows.

EDIT: I reinstalled the game now and went around in the options for a bit (I actually changed nothing, so it might have taken some time to authenticate it this time) and suddenly it worked. For those of you who are trying to enter a CD-Key, this can be done in Options -> Authentication.

[MattyRasker]

Got the same problem here, but I will tryHomo(Bo) solution.

[MattyRasker]

Oh wait, this thread is over a year old. Well, I'm getting it anyway.

[MattyRasker]

Tried ♥♥♥♥ solution, nope. Plus I cant seem to view a CD key in Steam (normally you'd get this by right clicking and choosing the View CD Key option, but its not there). Oh dear.

[Mike]

I tried this: http://www.introversion.co.uk/defcon/support/networkproblems.html , deleted the authkey file in Steam\SteamApps\common\Defcon and closed and started the game several times. And the problem was gone.

[al100]

Exit DEFCON and log out of Steam
Locate your DEFCON game folder (by default it will be under your Steam installation folder\SteamApps\common\defcon\ )
Open the preferences.txt file
Locate the following settings:
NetworkMetaServerPort = 5009
NetworkServerPort = 5010
NetworkClientPort = 5011
NetworkUsePortForwarding = 0
NetworkTrackSynchronisation = 0

Change these lines to:
NetworkMetaServerPort = 27020
NetworkServerPort = 27020
NetworkClientPort = 27020
NetworkUsePortForwarding = 1
NetworkTrackSynchronisation = 0
Save the file, log back in to Steam, and start DEFCON