I accidentally blocked my friend and now when I try to unblock him it doest work???

My name is Fernando I'm an independent consultant, I'm happy to help.

You can unblock a player at any time by sending a message or friend request to the affected player.

I hope I helped and see you soon.

Hi, i accidentally blocked my friend, and now that i have unblocked him, he permanently show as offline now, i was in a party with him so i know he isnt offline

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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?

I deleted him about 3-4 months ago, he is not following me on one (this is kinda irrebefolevant because this works the other way around) I am not following him. i have blocked/unblocked him and the problem still occured.

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I think a cause for this problem could of been because i accidentally added him after trying to rapidly delete friend request that i let pile up then quickly deleted.

I accidentally blocked a friend I was playing AlphaJax with, how do I unblock them?