If you are having issues getting achievement progress or unlocking achievements, this article contains common reasons why and steps you can take that might fix the issue.
If a DNS Ad-Blocker is in use, you need to allow a few services used specifically for Halo Services and Achievement related services that track achievement progression. To do this, authorize the following DNS:
As we grow and expand our games and services, it's possible these authorized DNS locations will need to be revised in the future.
File integrity verification
Try following the instructions in Verify Integrity of Game Files. This issue is most common when you have modified files.
Run with Easy Anti-Cheat (EAC) enabled
If you have been modifying files or are running the game with EAC disabled, you cannot earn achievements. To earn achievements, you must run the game with a clean install and the EAC-enabled executable active.
On Steam, make sure you have done the above step to Verify Integrity of Game Files and selected the “Play Halo: The Master Chief Collection” version on launch.
On Game Pass or the Microsoft Store version, you will need to search for “Halo: The Master Chief Collection” locally and make sure to run the EAC-enabled executable of the game. If you receive a message blocking you from matchmaking after selecting the EAC enabled executable, please uninstall and reinstall the game.
In Campaign, there are certain skulls that will disable some achievements. When enabling these skulls, a message displays informing you that this is the case.
Campaign completion & Campaign playlist achievements
There are some known issues regarding these achievements not unlocking immediately upon completion. In most cases they are granted within 24 to 72 hours after completion if they aren’t granted immediately. If you have not received the achievement within 72 hours, please visit the Halo Support site and create a ticket.
Speedrunning achievement issues
If a user quits and resumes a single mission over multiple sessions, it can cause issues unlocking achievements. We recommend completing any speedrunning and scoring related achievements in a single session.