Campaign Progress Not Recorded?

Games Halo: The Master Chief Collection
1

Alrighty, so I started Halo 3 Legendary campaign last morning, and finished it roughly an hour ago. And yet, the MCC says I have not even completed “Tsavo Highway” and “Halo,” let alone on Legendary. Any idea why?

  1. All missions were done with a stable Internet connection

  2. All missions were done in singleplayer

  3. All missions were done in ONE run, meaning no Save/Quit’s or Exits or Rally Points.

Thoughts? Is this because the MCC service record and data are down?

2

When I did my legendary playthrough long ago i also noticed this glitch, if you leave a mission and “continue” it multiple hours later its very likely it wont count it towards your progress (or not “exist” in the games memory), it happened to me on CE library and a few others as well and if you genuinely didnt leave the mission even for a second it might have just been some other glitch that happens occasionally as well where it just wont count your progress if you take too long on a mission