hello I wanted to tell you, I have a big problem I just bought the game and launch it! but when I log in to my microsoft account he tells me that it is locked and I can no longer change my microsoft account!! isn't there a command to remove the account that one tried to link to? i have try to uninstall all my game but nothing they say me my account is lock and i cant change it.. can i delete the program connecting me to the microsoft account. 

I just want to leave this account and go in another..

Hello Piro! You should be able to change the account you login by hitting Windows + G to open the gamebar. Once in the gamebar click the Gear (Settings), then go to Accounts, and logout. After that you should be able to log into a new account. If this doesn't work, I recommend reaching out to Xbox Support as they are better equipped to deal with Xbox Account issues. 

Thanks