Halo: Reach Multiplayer Beta/Errors
From Halopedia, the Halo wiki
This is a list of Halo: Reach Beta errors and fixes.
The massive amount of gamers that downloaded the Halo: Reach Multiplayer Beta via Halo 3: ODST at 10:00 AM PDT and at later times was reported by Bungie to have overwhelmed the servers and download times.
There was one common problem with players in Invasion, due to massive lag, the screen will turn black and the Elites will have the main common Spartan loadout: Primary Weapon: Assault Rifle. Armor Ability: Sprint. Grenade Type: Fragmentation grenades.
In the Reach beta, severe lag caused the armor permutations of corpses (and much more rarely, living bodies) to change. In several cases, this revealed unfinished, unreleased, and even Campaign-exclusive armor to the public. Numerous screenshots were taken and have been presented below.
In objective-based gametypes, waypoints over items would sometimes glitch for unknown reasons. Such waypoints' "labels" were filled with random icons. Judging by the number of screenshots, the glitch was most common in Stockpile, with Capture the Flag being a close second. There are only a handful of screenshots depicting the glitch occurring in Invasion.