Halo: Campaign Evolved received a significant maintenance update on July 29, focusing exclusively on bug fixes and performance optimizations rather than new features or content. The update puzzled players owing to its substantial file sizes across platforms—ranging from 4GB on the Xbox PC App to 21GB on Steam—despite containing no new campaign areas, weapons, or collectibles.

The patch addresses multiple technical issues including stability enhancements when using specific AMD graphics driver versions with FSR enabled, corrected enemy engagement patterns in several campaign missions, and driver compatibility advisories for both AMD and NVIDIA users. Additional improvements encompass fixed enemy pathfinding in certain areas, correction of a damage calculation error affecting charged Plasma Pistol attacks, and performance refinements for players managing large friend lists across PC and console platforms.