Xbox One Sign in problems for my Child

hello, i understand there are problems with signing into child acounts on xbox live, i am not a child and would wish to change my account to an adult one , how do i do this?

Problem:

You see the following error and message when you try to sign in to Xbox Live using a child account:

Before you can sign in here, you'll need to sign in at Xbox.com.

An adult will also need to sign in so they can give permission.

Code: 83118853

This means that the parent account must provide permission for each associated child account (under age 13) before the child can access Xbox Live

Solution:

To resolve this issue, have the child account sign in to Xbox.com. Then, when prompted, the parent account associated with the child account should sign in to Xbox.com and give permission for the child account to sign in to Xbox Live.

If you keep experiencing the problem, contact Xbox Support.

Basically you set the Xbox One your child is going to use, as your home Xbox. You then sign out and your child can sign in with their gamertag. You then sign in with your gamertag on the other Xbox One. If your child is in your friends list, you should
be able to invite to party and game.

Ah ha! I think I found the problem. The Xbox was set up to automatically sign my profile in when turned on! I've changed that now so that no one is signed in automatically and I chose the "lock down" setting for my profile.

Now, assuming that one cannot access the settings from a child account, I think, maybe, keep your fingers crossed for me, I've got it.

(someone please burst my bubble right away and tell me if child accounts can access the alternate MAC address settings)

Please visit: support.xbox.com/.../child-and-adult-signed-in, if you're having issues.