Xbox Support/Mojang Migration

Matthew, please try this:

Create a new account that can be considered as an adult account (try using another web browser or incognito mode).

Once done, add your main account as organizer via the link below. (you can see in the new account an "add member" button

https://account.microsoft.com/family/

Please double check that you select your main account as organizer too, not member.

Once successfully added, sign out from your account everywhere and restart your PC or Xbox

Then log in your account again and try using multiplayer features on Minecraft

There is only me and it clearly states "Age Filter: Any Age" under apps and games

Hi and thanks for reaching Xbox gamer's community. My name is Josef.
Thanks for reaching out! I'm an Independent Advisor and a Microsoft user like you.
I'll be happy to assist you out today.

Matthew, if you go to family group in the link below:
https://account.microsoft.com/family/

Is there only you? Or is there someone else with you?

Hello Sereen Taha,

Thank you for contacting the Xbox Support forums. To confirm, you have never had a Mojang account and still do not have an account, is that correct? If so, a Mojang account that is migrated to a Microsoft account is required. For additional details, please review: Minecraft: Java Edition Account Migration FAQ.

If you continue to have the error after migrating your account, please contact Mojang directly at Mojang Support - Submit a Request.

Thank you,

-Tali

I already wrote to Mojang support and this is what they answered me:

As of September 19, 2023, Minecraft Support is no longer able to assist with Mojang/Minecraft log in or other account related issues as account migration has ended. If you have migrated your Mojang/Minecraft account to a Microsoft account and need assistance, please contact Microsoft Support.