Changing my child's date of birth

Is your child account 18 years old based on the date of birth you originally entered when making the account? If not then that is why it wont change to an adult account. Note that if you changed the date of birth on your Microsoft account that will not change
the date of birth on you Xbox Account. The child-adult upgrade system only looks at the date of birth that was originally entered when your Xbox account was made.

i play on PC. I was added as a child because my birth date was wrong but i could change my birth date to the right one. I left the family account now im the organizer.

Once a child account is created it will only be able to become an adult account when the child turns 18 or 21, depending on your country.

Hi JaysonKane,

Check out this link on How to change a birthdate on a Microsoft account.

Hope this helps

You can easily change the date of birth under the profile info yet keep in mind you can't change a kid's account into an adult's account.