11.12.14 7:04 PM Update
Next update: 11.13 12AM
We have identified that our 11.12 morning server-side update has improved matchmaking times for many users, while others are still seeing longer than expected times.
This evening we plan to deploy additional server updates that will improve searching times and increase the likelihood of players finding games. The update will allow more players to enter matches, which may result in larger team sizes (5v5 instead of 4v4, for example). Occasionally, this may result in uneven teams, and we continue to work on this issue.
Currently, there is an existing Xbox Live Services issue that is impacting several Xbox games, including Halo: The Master Chief Collection. As soon as Xbox Live services return to normal, we will deploy our latest server-side update to further improve matchmaking. For up-to-the-minute updates on Xbox Live Service Status, please check the support page here:
http://support.xbox.com/en-US/xbox-live-status
We have also confirmed that stats and achievements are not registering, and are working with the Xbox Live team to ensure that these issues are resolved as quickly as possible.
As we stated previously, the 343 team continues to work around the clock to provide ongoing improvements to the experience for Halo: The Master Chief Collection. Thank you for the ongoing patience and support.