Battlefield 2 Error "CD key is not valid"

[FpsMaster]

Every time I try to enter a Battlefield 2 server it says "CD key is not valid." I've been playing Battlefield 2 online for 2 months now and this just started happening so I can't get into any BF2 server. One other thing, I bought my Battlefield 2 game off of Steam so I never got any CD.

[MaxPil]

On our server GamePolis.ru Project Reality we have the same problem for many players.

Right now have no idea how to fix it and why it happened.

If someone got the same problem and fixed it, plz let us know.

Thx.

[Omega4ever.s]

On our server GamePolis.ru Project Reality we have the same problem for many players.

Right now have no idea how to fix it and why it happened.

If someone got the same problem and fixed it, plz let us know.

Thx.

I have license CD-key and I haven't problems on your server.

[FpsMaster]

When you buy a game off of steam there is no CD key, the game just goes on your account.

Edit: Steam just gave me a CD key for my Battlefield 2 game, so I will try it out on the directions you guys gave me on one of the stickies.

[Valleyforge3946]

When you buy a game off of steam there is no CD key, the game just goes on your account.

Edit: Steam just gave me a CD key for my Battlefield 2 game, so I will try it out on the directions you guys gave me on one of the stickies.

There are multiple solutions to this problem. It can be as simple as a missing file to your registry going corrupt. Did you but the game off steam? if yes.. then it's probably a steam issue. Most likely.. it's the registry or your md5's aren't matching up.
Note.. this has happened to me twice. There is a 50/50 chance of the working.
1. Start off 4 = BF2

2. Open regedit ( start > run > regedit)

3. Go to HKLM\Software\Electronic Arts\EA Games\Battlefield 2\ergc

4. If yours was like mine, you will see that the entry is nothing like your CD Key.

5. Delete everything "AFTER" the "x9392" and input your "CD Key" for BF2. (x9232CDKEYHERE)....
......Do not put in the dashes.

6. close & reboot; then, checked RegEdit on this just to make sure
before attempting to get into multiplayer-Game-play........
)

7. THEN, after BF2 is up and working OK....Install BF2:Special Forces. After the installation,
ensure it is in the RegEdit, also.....HKLM\Software\Electronic Arts\EA Games\
Battlefield 2 Special Forces\ergc.........CD Key for SF without dashes.

8. Install the "patch" >>>>yes again ! ! .......and also check out the cd key in RegEdit
for both, again.....( just to make sure and all ) !