[FIX] Your CDKey is not valid

Overview

How to fix your CD-Key for Battlefield 2 and Special Forces.

How to fix the invalid CD-Key

With this guide you can fix the Invalid CD-Key Message for the Battlefield 2 Complete Edition.
This should work for Battlefield 2 and Battlefield 2 Special Forces.

Step 1:
Download the Battlefield 2 CD-Key changer.

• Battlefield 2 – CD-Key Changer[www.germandarknes.net]

Step 2:
Start the CD-Key Changer, type in your CD-Key and press Apply.

You have to run the tool as administrator!

Step 3:
Delete or rename this file:
C:Program FilesSteamsteamappscommonbattlefield 2installscript.vdf

Step 4:
Run Battlefield 2 as administrator.

Right click on “C:Program FilesSteamsteamappscommonbattlefield 2bf2.exe”
Properties->Compatibility->Check “Run this program as an administrator”->Apply->OK

Step 5:
Try out if it works. If you still get the error, go back to Step 2 and tick the “Don’t include hyphens” checkbox before pressing Apply.

If it works:
Enjoy Battlefield

Please report if it works or if you have any problems.

Also check out this thread:
[link]

How to fix the desktop crash

Right click on “C:Program FilesSteamsteamappscommonbattlefield 2bf2.exe”
Properties->Compatibility:
Check “Disable visual themes”
Check “Disable desktop composition”
Check “Run this program as an administrator”
->Apply->OK

It should look like this: