Challenge Hub Unavailable?

Hello everyone,

Recently installed Halo 3 to start working on the new acrophobia skull and unfortunately the “Challenge Hub” is grayed out and unavailable. Not sure what’s causing this. I’m running the regular version (not anti-cheat disabled).

Any thoughts on what the issue could be?

When I restart my PC it goes into a constant state of “Retrieving…”

I use W10.

I had the same issue, are you running anti cheat disabled? I was then i thought id try anti cheat enabled version and its working

Hey, my roommate and I had this same issue with our games. What worked for us was turning off the router firewall and restarting our games. After that, it all worked.