My brother and I both own Xbox One's. We both have accounts on both Xbox's. Sometimes we buy games and sign in as one another to download them. I wanted to do this with Battlefield 1 but when I try to sign in as any other account on my console, the process starts for a second and then seems to crash with no error messages. Can anyone help me with this issue?

It might have to do with the DNS attacks happening today.

Here's an article on it: https://gizmodo.com/this-is-probably-why-half-the-internet-shut-down-today-1788062835