Activating a Battle.net key is really easy, simply follow these short steps:
- Go to https://blizzard.com
- Sign in to your account.
- On the top right corner of the page click your account and choose Account Settings.
- Type the code, then click Redeem Code. Then follow the prompts to download the game.
- That's it - your game is ready to play!
The key is not working
If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions: