The message Assetto Corsa is obsolete (v1.16.3 is required)"
Run the Base Game Once: Before launching through Content Manager, launch the game directly via Steam. Load into a track with a vanilla car, then exit and try Content Manager again.
Recently, it's been announced that v1.16.3 is required to continue playing Assetto Corsa. This has sparked a heated debate among the community, with some arguing that the game is now obsolete and should be replaced with a newer, more modern racing simulator.
In some cases, the 64-bit launcher fails while the 32-bit one works:
Many users have found that manually updating the version text file solves the reporting error instantly:
Don't get left behind! Make sure you're running the latest version of Assetto Corsa to: