Sign in to Your info on the Microsoft account website.
Choose Edit your personal info.
Change your birthdate, and press Save.
If the birth date on a Microsoft account says that it belongs to a child, there are different steps to take in regions such as the United States of America and the Republic of Korea, and other regions that regulate what children can do online.
Using the parent's Microsoft account, sign in to Security & privacy on the Microsoft account website.
Select Manage permissions for children.
For the child’s account you want to change, select Edit, and then follow the instructions.
You have three options:
Sign in to your Microsoft account.
The You need a parent's permission page appears.
Select I'm an adult—why am I seeing this?
Follow the instructions to provide your credit card info.
Fax the following info to (425) 936-7329:
Place this text at the top of your fax: ATTN: MICROSOFT ACCOUNT CHILD AGE VERIFICATION.
Your complete Microsoft account email address.
The first name and last name for the Microsoft account.
The city, state, and ZIP code for the Microsoft account.
A photocopy of official identification that shows your birth date, such as a driver's license, state-issued ID, or passport.
A valid email address (other than your Microsoft account) where we can contact you.
Mail the following info to:
Microsoft Account Child Age Verification
1 Microsoft Way
Redmond, WA 98052
Place this text at the top of your info sheet: ATTN: MICROSOFT ACCOUNT CHILD AGE VERIFICATION
Email Microsoft support
Chat with Microsoft support