Additional authentication needed for Xbox One

I turned on my console today and found I wasn’t connected to XBOX Live. I went into my network settings and clicked (test network connection) and I was instantly faced with the message “Internet problem, Additional
authentication needed. To connect to this network, you’ll need to enter additional authentication info. If you have an alternate MAC address, choose Enter alternate MAC address.” And I was given two options: Authenticate now, which took me to a black screen
and then abruptly closed me out of it, and Enter alternate MAC address. I have tried the MAC address on my desktop, Mac, and the back of my router; I've also restarted my router and xbox twice. Nothing has worked. If anyone has any information regarding how
to solve this problem, I would greatly appreciate your help!

:)