Windows 10: Is it possible to mix 2 accounts?

I have an account where I accidentally activated the game key and my main account. Is it possible to connect it somehow or move this game? I want to delete the old but I will lose game.

:)

 

Remove account


I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:
   
   Code:

   net user test /del

 

Windows 10 1709 System Restore problems...


That seems to be an attempt at Option 2 in the tutorial, which requires you to
a. Boot to a command prompt (Did you?)
b. You then seem to be mixing steps 3,4 and 5, thus your command is incorrect.

I suggest Option 1 is easier.

If you still have problems, please repost listing each specific step and saying which option from the tutorial you are using. Thanks.

 

What is "Mixed Reality Portal" ? Can I remove it?

I followed these steps but Mixed Reality Portal is not in Programs And Features, so it's not possible to turn this feature off. Any other suggestions?