Install Instructions. [*]This is a four cd set. (2 for COD and 2 for United Offensive) [*]First mount or burn image using something like power iso or daemon tools. [*]Install (setup.exe)or run COD disc 1,then it will prompt for disc2 [*]Mount disc2 over disc1, or insert disc2. [*]Use the serials from above [*]United Offensive installs the same in my call of duty united offensive game, my cd-key is all messed up, i paid for this game and it just wont work, when i enter it, it says my cd-key is VALID. but when i try to enter any MP server The message is"Invalid cd-key". #1. The author of this thread has indicated that this post answers the original topic. Shady Jul 2, 2023 @ 2:40pm. You cannot redeem keys from the physical copy on Steam. They are not Steam keys. They are keys for the game itself, but you still need to have the files either from your original retail discs or, of Call of Duty ™: United Offensive ™ has its own CD key, separate from . Call of Duty. Your . Call of Duty ™ key will not allow you to play . Call of Duty ™:United Offensive. ™ When prompted, enter the CD key as it appears on the back of the manual. It’s important that you observe the following guidelines to ensure the privacy of your CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation La primera Expansión de la historia de Call of Duty★ Descuento en SCUF GAMING usando código INFUSER Call of Duty: United Offensive is the expansion pack for Call of Duty. Call Of Duty 1 Multiplayer Cd Key In Use — bestnload Intel Wiusb Usb If Xhci Usb Host Controller Driver Baar Baar Dekho The Steam download of Call of Duty 1 comes with patch 1.5. 1.5 public multiplayer is dead for a while. However, on patch 1.1/1.1x there's a lot of players and you'll always find a full server. 1mgFH.