List of rectified inconsistencies in the Halo series
From Halopedia, the Halo wiki
This page lists internal inconsistencies and canonical conflicts that have since been resolved in the Halo series whether from reprints or external sources.
Halo: The Fall of Reach
There are two reissued editions of The Fall of Reach; the first one, released on August 3, 2010, retained many of the errors present in the original printing while spawning some new ones of its own, prompting Tor Books to publish an additional "Definitive Edition" with further revisions on June 28, 2011.
Halo: The Flood
Halo: First Strike
Two pages prior to this, the line:
Additionally, Fred's description of the event in chapter 12 is also slightly modified:
Halo: Contact Harvest
Halo 5: Guardians
Halo Wars 2