Bonnie Ross, head of 343 Industries and therefore responsible for what is essentially the entire Halo brand, issued an update to players who've been frustrated with the company's launch of The Master Chief Collection.
With the game out on November 11th, Xbox One owners should have gotten the best possible Halo experience gathered on a single disc and I think I expressed most of why that's largely true in our review. However, many consumers have rightly called out trouble connecting to games in multiplayer. Ross summarized as much in the following from the Xbox News Wire.
On the matchmaking front, we have encountered unexpected issues that were not apparent in our internal test environment and that have resulted in a frustrating experience, including long matchmaking times and low session success rates. Within 343 Industries and Xbox, I can assure you that resolving these issues is our #1 priority. We continue to partner with the Xbox platform team to analyze all data to make ongoing server-side adjustments to continually improve the matchmaking experience.
Halo Waypoint, Halo Channel, and Halo forums located at http://aka.ms/mcc_updates will have further details and more up-to-date information regarding fixes to matchmaking and more.