Xbox one s a child account

You don't need to buy separate gold for each account.

You can set Child 1's Xbox as child 2's home Xbox, then only buy gold for Child 2's account.

I hope that makes sense, if not I can re-explain.

This was Done!
Xbox one X set with child one and child Two
Xbox one S set as Child One and Child two
Auto login is Off on Both Consoles
child on logs in plays game on xbox one x, child two logs in on same game on xbox one s, Child one is logged off of Xbox one x. Child one logs back on Child two is logged off.
this is also not logged off of same game but different games
child one on x playing far cry, child 2 logs in on s and starts red dead, far cry is logged off....
Far Cry is only on the x not the S

Done All the bits on the web, done it all with the Support staff, still got the same problems

there is one thing that NOBODY has covered, in the USA Red Dead is a Different certification. although both kids are UK, red dead is different in the UK and the USA, could this be the problem... nobody knows

For parents of children that turn 18, they can promote a child account by using
support.xbox.com/en-US/xbox-360/security/promote-child-account

If you are the child on the account, you will need your parent(s) to promote your account.

Xbox series s and it says I am on a child’s account

I had this issue when I accidentally deleted the parent account (though I restored it later).

My solution (Xbox 360):

1. Re-link the child account to a parent account on Microsoft family (parent account's age must be over 18), if not yet linked. Ensure that when the child account is added to the Microsoft's family system, the child account is added as a child.

2. Ensure that the child account s age is under 18

3. Ensure that the child account does not possess any payment options (credit card, debit cards etc.). If so, remove all payment options.

4. Set up the parent account's Microsoft Account options to ensure that it is a valid account. If possible, also try to add a payment option for the parent account.

5. On your Xbox, delete any profiles associated with your parent and child account (Main menu > Settings > System > Storage > Hard Drive > Profiles > (Select profile) > Delete)

6. Sign in to the parent account on your Xbox, followed by the child account.

I believe this issue has nothing to do with an invalid parent account, in fact I think it s caused by an invalid CHILD account, just that the Xbox error handler doesn't have an error for invalid child account. I tried to tackle this problem before by using
another Microsoft parent account, but that didn't work, so I changed the CHILD account s settings and viola!

Not quite sure if the steps above can be replicated on an Xbox One, but the fundamental concept should remain the same (modify child account).