Activating a game key for Microsoft is really easy, just follow these simple steps:
1/Go to this page.
2/ Put your code in and select 'Next'
3/ Confirm your key by choosing 'Continue' and proceed with the on-site instructions.
4/ Once activated, you can find and install your game from the Microsoft Store tab.
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: