Halo: The Master Chief Collection receives a new update with these fixes

Halo: The Master Chief Collection receives a surprise update with uneven downloads on Xbox and PC.

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The saga of 343 Industries is back in the news years later thanks to an unexpected new update. Halo: The Master Chief Collection has just been updated on both Xbox consoles and PC, with special attention to those using the Microsoft Store version. The reason is significant: a critical issue affecting matchmaking in multiplayer has been fixed.

Although the solution is primarily intended for the PC version of Game Pass and the Microsoft Store, the download also applies to Xbox and Steam. However, players should note that the patch size varies greatly depending on the chosen platform.

Halo: The Master Chief Collection Patch Notes

On September 17, 2025, the following fix was applied:

• A problem that prevented proper cross-platform matchmaking on PC via Xbox and the Microsoft Store has been resolved. Searches are now faster and more stable.

In addition, to maintain parity, the update is also being distributed on Xbox consoles and Steam, although with a much smaller size than on PC.

Download Size by Platform

• Xbox Series and Xbox One: around 1.0 GB.

• PC (Microsoft Store / Xbox App): around 116.3 GB.

• Steam (PC): around 35 MB.

• Halo MCC Mod Loader: around 23 MB.

An uneven patch that, despite its size on the Microsoft Store, is essential to ensure that multiplayer works correctly on all versions.