You cannot play on Realms because of how your Microsoft Account is set up.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today Miarkraim

When you say restarting your console, do you mean power cycling it? Or pressing the "restart" button?

If it's the last, try instead power cycling it:

1. Turn off your console by pressing the Xbox button on the front of the console for about 10 seconds, until it shuts down completely.
2. Unplug the console's power cable from the console and from the power outlet. Wait 5 minutes.
Important: Be sure to wait at least 5 minutes. This step resets the power supply.
3. Plug the console power cable back in.
4. Press the Xbox button on your console to turn it on.

Aftert that, try to remove and re-add your profile on the console.

In case you need it, here's how to remove and re-add:

https://support.xbox.com/en-US/help/account-pro...

Also, disconnect your router from power for about 3 minutes and try again once everything is up and running


By the way, in case you have a different Microsoft account signed on the console. If you try with another account, the issue persists?

This helps us to isolate the issue
I'll be waiting for your answers, greetings from another Microsoft user

so problem fixed, AFTER I gave up and did a full system reset, during the setup it FINALLY informed me my gamepass had expired. WHY can't it say you can't play online due to xbox live expired instead of can't play because parental controlls?????

Hey!
I'm glad to hear that you was able to solve this issue
You're right, would be great receive a more specific message

You can try sending this feedback to Minecraft, in that way they can add specific messages in the future for issues like these:

https://feedback.minecraft.net