multiplayer locking after switching a Minecraft account to Microsoft?

Hi! My name is Pam. I'm an Independent Advisor and I'll be glad to help you today.

Can you check your privacy settings please?

https://account.xbox.com/en-US/Settings

Make sure that under Privacy, Xbox One/ Windows 10 online safety, everything is set as ALLOW and EVERYONE.

Note: If you own a child account, make sure to ask the adult account of the family to change the settings for you, okay?

I hope this helps. Feel free to ask back any questions and keep me posted.

Do you have a Nintendo Switch Online subscription?

Nintendo Switch Online subscription will be required for multiplayer. A free Microsoft account is recommended for players to get the most out of this version of Minecraft.

Hi Eco,

Thanks for reaching out to the forums. We understand you have question on log in for Minecraft. You should be able to log into all Minecraft on many different platforms with your Microsoft account. As Cross play requires a Microsoft account.

Cross-platform play available on Xbox One, Playstation 4, Nintendo Switch, iOS, Android, and Windows 10. Cross-play requires
Microsoft account. Xbox Live Gold required for online multiplayer on Xbox One. PlayStation Plus Membership required for online multiplayer on Playstation 4. Nintendo Switch Online membership required for online multiplayer on Nintendo Switch.

Thanks,

Brad

Hi Eco,

Thanks for reaching out to the forums. We understand you have question on log in for Minecraft. You should be able to log into all Minecraft on many different platforms with your Microsoft account. As Cross play requires a Microsoft account.

Cross-platform play available on Xbox One, Playstation 4, Nintendo Switch, iOS, Android, and Windows 10. Cross-play requires
Microsoft account. Xbox Live Gold required for online multiplayer on Xbox One. PlayStation Plus Membership required for online multiplayer on Playstation 4. Nintendo Switch Online membership required for online multiplayer on Nintendo Switch.

Thanks,

Brad

its not work

Hi Alex,

Thanks for reaching out to us in the forums for this issue with Minecraft Realms on the Nintendo Switch. Based on the message you received, it may be possible that your account doesn't have the correct permissions to access online multiplayer across different
devices.

Is your account a child or adult account? Players under 13 years old will have online multiplayer disabled by default with Minecraft and
won’t be able to join Realms or servers unless a parent changes their account settings.
For help with changing these account settings, you will need to change your
Privacy and Online settings of the Xbox Live account.

For further information on this and other information related to Minecraft Realms or Minecraft on the Nintendo Switch, I recommend the following support articles:

Minecraft Realms

Minecraft for Nintendo Switch FAQ

I hope that this information helps out!