Friend block me and now he can’t unblock me

No I never answered my own question. If you read carefully, I said I know what to do to unblock somebody. Then I asked how can I unblock somebody when we've blocked each other? This means I explained that I know how to unblock somebody when he hasn't
blocked me. This means things are harder to deal with when we've blocked each other because if I send him a message, invite or friends request, he won't get either of them so that I can unblock him, same thing visa-versa if he tries to unblock me. I was
asking if there's another way to unblock somebody when he's also blocked me, such as, is there a block list for me to unblock him from or can I unblock him by contacting Xbox Live?

[quote user="Blaine Bingham"]

First, I know we have to send a message, chat invite or a friends request to unblock somebody. Me and somebody that I was friends with, we fell out and blocked each other. Is there
another way how I can unblock him so that he can send me something to unblock me?

[/quote]You just answered your own question.

Can someone please tell me how to unblock a friend I blocked by mistake?

Unblock and change them to friends do not put in favorites full restart the console and then block just to be sure

Wait, so you want me to unblock these people, send them a notification that I added them as a friend after that? Just to block them as they already are?

Or, hypothetically speaking of course, Microsoft could fix their block issue.🤷‍♂️

I think you meant you blocked a friend and now you want to unblock. Just search for your friend's gamertag, open their profile and you will see an option to unblock.