Chat not working on Xbox live

Xbox support works with live chats and phone chats, they don't have email support.

Hi,

There currently is a service issue affecting party chat. They're actively working on getting it resolved now. In the meantime I would suggest you keep a look out on the service status page or sign up for a text message to be notified when the issue is resolved
here: https://support.xbox.com/en-US/xbox-live-status

-Please try hard reseting your console (hold the power button on the console for 8-10sec. , and power back up) that seems to help resolve it for some users.

I made the suggested changes to my router. We'll see if this works tonight when my friends are back online. However, I'm a little doubtful since i have tried joining chat through the xbox app on my phone as well through my phone's data and it does the
same thing...icon lights up when i talk but no one hears me

Have ou checked if you have an Open NAT? because a closed or moderate one can give you various issue and chat problems are one of them.

Check this link for a complete list of ports you must open: https://beta.support.xbox.com/help/Hardware-Network/connect-network/network-ports-used-xbox-live

Hi I am running windows 10 and for some reason the chat option on xbox is not working. I am unable to send any of my friends messages or receive any. If i try to send a message the chat box opens but it keeps giving me a loading icon at the bottom of the
console. but I am unable to send a message.

Can anyone help me with this problem please.

It is very possible the ports for Teredo are not working or blocked (My company blocks it from a corporate IT policy). Check this link below and see if it helps.

https://support.xbox.com/en-US/xbox-on-windows/social/troubleshoot-party-chat