So I just played 3 games of warzone turbo and was checking out what commendations needed to be done when Halo 5 froze then booted me to dashboard. No biggie happens occasionally. But now when I try to find a match I get a message saying error searching for players. Everything else that has an Internet connection works and the NAT is open so not sure if it’s a 343 server issue or Xbox live being down issue. Also restarted my modem twice.
Try removing your profile from your console and download it again from the cloud, also, I recommend you to restart your router and do a power cycle to your Xbox.