During January 2023, malicious third-party modding menus exploited a severe weakness in GTA Online's peer-to-peer (P2P) network infrastructure. Rogue users could remotely corrupt player accounts, alter ranks, delete in-game bank funds, and even ban or crash players straight to the desktop. Update Feature Focus Area Primary Impact Session Security
: Ray-traced reflections were added to the fidelity modes of PlayStation 5 and Xbox Series X|S, drastically enhancing the visual depth of vehicles and skyscrapers. Update 1.65: The Essential Hotfixes
The transition from 1.64 to 1.66 radically changed how GTA Online felt. It shifted the meta toward mobile, solo-friendly businesses, reinforced the game's security infrastructure against severe exploits, and modernization of controls that paved the way for the game's final generation of DLCs. GTA 5 Grand Theft Auto V Update 1.64 - 1.66 -...
Fixed an issue that prevented correct delivery animations during certain Acid Lab source missions. Grand Theft Auto V Update 1.66: The Drug Wars Finale
: Fine-tuned visual assets on eighth and ninth-generation consoles to optimize stability. Update 1
: Solved an internal bug that incorrectly forced players back into the single-player Prologue before letting them access network lobbies. System Stability & Vehicle Corrections
: Added to Fidelity Mode specifically for PS5 and Xbox Series X|S . Grand Theft Auto V Update 1
The 'hide all' option in Map Blip Options was reintroduced, allowing for a cleaner UI.
Gameplay
The longevity of Rockstar Games’ Grand Theft Auto V and its multiplayer counterpart, GTA Online, rests heavily on its aggressive post-launch support. Navigating the series of deployments from Update 1.64 through Update 1.66 marks a transformative era for the Los Angeles-inspired sandbox. These updates bridged massive content expansions with critical, behind-the-scenes security overhauls.
Released on February 28/March 1, 2023, Title Update 1.66 was designed largely as a hotfix for stability issues, specifically targeting the PC version of the game.