Hello folks,
First off, my hat’s off to Splash Damage for a great game.
I am enjoying this game alot. But this morning, I wanted to play and I get this error that say’s you have been kicked via Punk buster for 2 minutes because of a missing CD-Key. Wait, i thought these games had no cd-key?
Can someone help?
Thanks
Anthony
This is how I fixed it. Keep trying to join a server until you get on one. Then exit the game and go to the etmain folder and look for the “etkey” file and make it a read only file.
ET, PunkBuster & Missing CDKeys Comment!
Sunday, June 1, 2003, 05:10 | Jube
Even Balance Inc. have updated their PunkBuster Wolfenstein: Enemy Territory news with information on “Empty CDKey” messages. Here’s the full scoop:Players who are getting “Empty CDKey” messages trying to connect to PunkBuster ET Servers may attempt a manual CDKey registration. Press the tilde key (the ~ key) to bring down the game console from any game screen and enter the following command (without quotes): “/pb_cdkeyreg”. You should see a message stating that a Registration Request was sent to the GuidAuth Master Server. After a few seconds (perhaps up to 30 seconds) you should see a message stating that the CDKey Registration was successful. After that, there should be no more messages about an Empty CDKey when trying to join a PB Server. Players having problems with this procedure (or any PB-related problems in ET) should email support@evenbalance.com and describe in as much detail as possible the problem encountered.
Stop by PunkBuster for Player and Server Admin manuals and PB FAQ.
http://www.planetwolfenstein.com/
This is basically how it’s fixed.
Go to your
Program Files\Wolfenstein - Enemy Territory\etmain
diretory. Find a file called etkey and delete it.
Then load up the game and pull down the console and type in the following
/pb_cdkeyreg
Give it about 10 to 30 seconds and you’ll see a message saying successful. Now play away. Simple huh 
Try making the etkey file in Enemy Territory\etmain\ read only and see If it works tho at first u may need to manually obtain a cd key/guid from PB with the /pb_cdkey reg command once u have been kicked from a server.
I was glad i had written down /pb_cdkeyreg ,cause first server I entered after posted the above I got booted (go figure).
But a quick ~/pb_cdkeyreg and it was fixed.
Why not just stay at your ET main screen? Check your console screen by hitting your {~} key, watch for PB to update your key automatically. It takes a few mins to authenticate, but it works…
itXi Red Ant 
Also try this:
Disable and enable Punkbuster, either in the menu or take down the console and type: cl_punkbuster 0, restart ET, take down console again and type: cl_punkbuster 1. Punkbuster should have generated a new key for you now!
ANT