If you've tried the above and the error is still there, especially in a multiplayer context, you may be dealing with a different, related issue:
The "v1.16.3" message refers to the final official version of Assetto Corsa released by Kunos Simulazioni. While the game hasn't had an official update in years, the modding community has built layers of software on top of it. When these layers—specifically Content Manager and Custom Shaders Patch (CSP)—fall out of sync with the base game files, the "obsolete" error triggers. Phase 1: Verify Steam Game Integrity assetto corsa is obsolete v1163 is required fix hot
Here are the best ways to resolve this, ordered from easiest to most advanced. 1. The Quickest Fix: Edit changelog.txt If you've tried the above and the error
Go to your (usually steamapps\common\assettocorsa ). Find and open the changelog.txt file. Phase 1: Verify Steam Game Integrity Here are
The root cause lies in the asynchronous update schedule between Kunos Simulazioni (the developers of Assetto Corsa) and the independent developers of CSP. The official Assetto Corsa game is still receiving minor updates (like the Ferrari esport event car addition), but CSP isn't always updated immediately to recognize these new version numbers.
Completely close Steam (check your system tray to ensure it is dead). Right-click your . Select Run as administrator . Launch Content Manager and test. Advanced Technical Fixes
tool to ensure your base game files are correctly installed and that no official updates were missed or corrupted. General Troubleshooting Tips error assetto corsa is obsolete - help - Steam Community