Cannot update child account to adult account in Microsoft Family

A Microsoft child account cannot be manually converted to an adult account, even by the family organizer, and the date of birth cannot be edited to bypass child protections.

Key points from current behavior and policy:

1. When the account was created as a child account, its age and status are locked specifically to prevent children from changing their DOB to escape Family Safety restrictions.
2. Neither the child nor the organizing adult can change the DOB to make the account an adult, and the child cannot remove themselves from the family.
3. The only way for that account to become an adult account is for it to reach the age of majority defined for the country/region on the account. Until then, it remains a child account, even if it is 16.
4. While the account is still classified as a child, privacy/online safety and other restrictions must be managed by the adult account via the Family Safety pages (for example, at https://family.microsoft.com and related settings pages referenced in the context).

For now, any needed changes (privacy, online safety, screen time, etc.) must be made from the organizing adult account. The child account itself cannot be upgraded to adult or removed from the family until it reaches the statutory adult age for that region.

References:

• How to change a birth date on a Microsoft account
• Troubleshooting Microsoft Family Safety
• Managing parental consent
• How to provide additional consent for children's accounts
• how to change date of birth child to adult - Microsoft Q&A