Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
This behavior usually indicates a problem with how the verification flow is processing the code rather than a typing mistake.
Try the following steps in order:
- Wait a few minutes and request a new verification code
- Do not reuse an older email; each new request invalidates the previous code.
- Make sure the code being entered matches the most recent email.
- Check the correct mailbox and junk folder
- Verification codes are only sent to the email address that was entered as the child’s account.
- Confirm that the code email is not in Junk/Spam and that it comes from an @accountprotection.microsoft.com address.
- Avoid multiple rapid requests
- Excessive or repetitive requests can cause Microsoft to temporarily block or delay verification codes and may cause mismatches.
- If several attempts were made quickly, wait some time (for example, an hour) before trying again.
- Try a different browser or private/incognito window
- Open a private/incognito session and go again to family.microsoft.com to start the child account creation from scratch.
- This clears cached sign-in data that can interfere with the verification step.
- If still failing, wait and try again later or use a different verification method
- There can be temporary issues or heavy traffic that affect verification code processing; these are automatically resolved after some time.
- If another verification option (such as a different email) is available for the child account, try that instead.
If none of the above works and codes continue to be rejected, use the general sign-in helper and support options to have the sign-in flow checked:
- Use the Sign-in helper to diagnose sign-in issues.
- If needed, go to Contact Microsoft Support, describe that verification codes for a new child account are always rejected, and follow the Get Help → Contact Support path.
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