CONNECTION FAILED: ASSETTO CORSA IS OBSOLETE. V1163 IS REQUIRED.
The error message is a common technical glitch usually encountered when using Content Manager (CM) with the Custom Shaders Patch (CSP) . It typically occurs because the CSP does not recognize a minor update to the base game (like v1.16.4) and incorrectly flags it as outdated. Top Fixes for the "Obsolete" Error assetto corsa is obsolete v1163 is required link
The most effective and common fix is to manually edit the game's version identification file to match what the modding tool expects. Locate your root folder : Usually found at C:\Program Files (x86)\Steam\steamapps\common\assettocorsa changelog.txt : This file is located in the main directory. Edit the Version Number : At the very top of the file, you will see VERSION 1.16.4 (or similar). Change this text exactly to Save and Restart : Save the file and restart Content Manager Technical Context & Issues Version Mismatch CONNECTION FAILED: ASSETTO CORSA IS OBSOLETE