Assetto Corsa Is Obsolete V1163 Is Required Fix Hot ((top)) May 2026

This is a common error for modded Assetto Corsa players, particularly those using Content Manager and Custom Shaders Patch (CSP).

The Real Culprit: Mods, Steam Updates, and Community Servers

The irony is that Assetto Corsa is not obsolete because of its age; it’s obsolete because of its success. The game lives on through a thriving modding community (Content Manager, Custom Shaders Patch, Sol, Pure). However, this is exactly what triggers the v1163 error: assetto corsa is obsolete v1163 is required fix hot

  1. The Steam “Silent” Update: Occasionally, Steam will force-verify game files and “repair” them. In doing so, it overwrites critical modded files (like system/data.acd or kernel.dll) with the original v1.16.3 versions. Ironically, this makes the game less compatible with modern modded servers.
  2. The Custom Shaders Patch (CSP) Dilemma: Many servers now require CSP for rain, night lighting, or extended physics. However, some server owners run a strict vanilla check. If your CSP modifies a core DLL that v1163 doesn’t recognize, you get the boot.
  3. Server Misconfiguration: A surprising number of community server hosts mistakenly leave the "required version" field set to a hard-coded v1163, even when they are running modded content. The server says it wants vanilla, but the track list says it wants a 2024 F1 mod—hence the crash.

Fix: “Assetto Corsa is Obsolete – v1163 is Required” (Content Manager Fix)

If you’re seeing the error “Assetto Corsa is obsolete – v1163 is required” when trying to join an online server, don’t panic. Your game isn’t broken, and you don’t need to reinstall Windows. This is a common error for modded Assetto

This is the most common online matchmaking error in Assetto Corsa today. Here’s exactly why it happens and how to fix it in under 60 seconds. The Real Culprit: Mods, Steam Updates, and Community

2. Use Content Manager exclusively.

The vanilla Kunos launcher is notoriously bad at handling CSP. Content Manager bypasses many of the legacy version locks.

Step 1: Open Content Manager

Launch Assetto Corsa via your current Content Manager executable.