Okay so me and my friend want to game share and so the problem is that when he tries to make my home Xbox on his Xbox it says that "you can have one home Xbox at a time, and can only switch between 3 consoles at a time per year" but the game sharing reset this year so we don't know what's wrong.
What's wrong is your friend set and unset your home Xbox too many times. Xbox's have a limit of up to 3 switches a year, and the only way to get it fixed is to call microsoft. The process doesn't take too long.