To everyone saying they need an activation key:

[C0D3.3]

You don't need an activation key to play the game. If it asks for one, you downloaded the wrong version of Rainbow Six Siege. When you buy the game, you get two versions: the main game, and the Technical Test Server, or TTS for short. The TTS is where they test out future updates to see the response and receive feedback. It is NOT the main game.

To play the game, you need to download the right version. The main game will not have "- Test Server" at the end of it. Download that one, and you will be able to play. It should not ask you for an activation key.

Please check to make sure you downloaded the right version! If you're absolutely sure you downloaded the right one, and it's still asking for an activation key, make a request on the Ubisoft Support website[support.ubisoft.com]. Log in with your Uplay (Or Ubisoft Connect, whatever it is now) account and make a request.

Good luck!

[Ubi-WheelyDuck]

Thank you for sharing this Rook Harrison!

You are completely correct in everything you have advised and as this has been a key topic on the forums I am going to lock this and pin it so that everyone can see and get the help they need.

Thank you once again!

-Ubisoft Support🦆

[Ubi Milky]

If you are unable to remember your Ubisoft account details, you can reach out to us through a private message via our social media support channels too >

Twitter Support - https://twitter.com/UbisoftSupport
Facebook Support - https://www.facebook.com/UbisoftSupportUK/

Please provide the following information when you contact us >

- Possible Ubisoft usernames used
- Possible emails used for Ubisoft account
- Your Steam ID unique code, found here >
https://support.ubisoft.com/en-GB/Article/000060565
- A screenshot of your proof of purchase for the game, as shown here >
https://www.ubisoft.com/help?article=000061770

With this information, we should be able to locate your correct account that has access to the game, and resolve the enter CD key message you see.

Ubisoft Support