I just reinstalled "Battlefield: Bad Company 2" on a new PC. Retail version, physical DVD. Single player is not a problem. But in Multiplayer, it prompts me for my serial key. When I enter it, I get a message that my "Register Code Is Already In Use". I don't seem to have any other numbers or codes or serial keys in the game booklet, or in any Battlefield: Bad Company 2 Serial Key Cd Key Free Download Crack Full Game Battlefield: Bad Company 2 Serial Cd Key Generator License Activator Product Origin Keys Full Game Download Free . You should build Bad Company 3 instead," he told Eurogamer in a new interview. The most recent entry in the Bad Company series--2010's Battlefield: Bad Company 2--sold nearly six million units Scottish Plum Jun 4, 2014 @ 2:56pm. You have two options, you can either press shift+tab in game and click on the CD key button to get a pop up with it, or you can right click on the game title in your library and select product key from the mini menu. go to steam game library. press the Battlefield Bad Company 2 game. and go over to that one. that looks like a gear. and select manage. and CD-Key. did a example on the image. if it says no CD-KEY. then you need to contact. steam support. since it happens on their side. the same if the key does not work. or something else is wrong. Strodum Feb 10, 2021 @ 9:20am. Like everyone else: Serial Key (resolved) I bought the game, start it, want to play multiplayer, serial key. But there is no serial key in my library. I never received one. I only bought this for the multiplayer so why didnt I get a key. Last edited by Strodum ; Feb 11, 2021 @ 12:21pm. With Battlefield: Bad Company 2 Keygen you can Get a cd-key which you can activate Battlefield: Bad Company 2 . Powered by Create your own unique website with customizable templates. Get Started Here are 10 working serial codes for Battlefield 2. MultiPlayer Game Hacking, Battlefield Bad Company 2 (BC2) Hacks & Cheats, Battlefield 3 (BF3) OEMQ5Rc.