Friend shows offline, even though they are def online

I have a friend who ALWAYS shows offline, even when they are definitely online. If I start a party, they can join, even though they show "offline".

It shows offline in games like ESO as well.

That friend says he sees the same thing for my profile, always offline.

Other friends show the correct status, it's only this one that has an issue.

Any ideas how to resolve?

You may have the chosen the option to appear as offline.

You can check it by pressing the "Xbox Button" on your controller to open the menu, there scroll left or right to the Sign in Tab, and press on your xbox profile icon, another menu will show up and there you will find an option at the bottom, select it and you will see a list where you can choose to appear either offline or online

Samething is happening with all my friends. Its showing all them offline even though i just had 10 friends online

well some people change their online status to offline, but they are online, i dont know exactly your problem, I can reccomendo you to add them to best friends and maiby it will let you interact with them, if that doesnt work, try this https://support.xbox.com/en-US/contact-us

Due to high demand on system there have been some issues such as store not working, gamer pictures not working and also friends list glitches.

I experienced this myself the other day, it has resolved itself now.

If still having an issue try holding in power button until console goes off, unplug console, leave it for a few minutes and then turn on

Some things like the gamer pics have been turned off due to demand but the friends list issue is a temporary glitch.

It may potentially be as simple as the person appearing offline. This feature allows players to make it seem as if they are offline when in reality they are playing.