Go to in the top right corner, then select Custom Shaders Patch . Navigate to the About & Updates tab on the left menu.
Make sure you aren't opted into any old 'Beta' branches in the Beta tab." Option 2: The "Short & Punchy" (Best for Server MOTD) VERSION ERROR: Your AC build is obsolete. v1.16.3 is required
isn't just a technical glitch—it's a gatekeeper. Here is the "story" of why you are seeing it and how to fix it. The Background
Instead, this is a .
Alternatively, you can download the latest patch manually from the official Custom Shaders Patch website and drag it into Content Manager to install. 4. Verify Game Integrity
Close Content Manager and launch the game directly through the Steam Library. This can trigger a small "Steamworks" or local update that syncs the files and clears the error.
The server requires a specific CSP version that your client is missing. assetto corsa is obsolete v1.16.3 is required
Open your file explorer and navigate to your Assetto Corsa root folder: C:\Program Files (x86)\Steam\steamapps\common\assettocorsa\ Locate the text file named . Open it using Notepad.
While annoying for a newcomer, the requirement for v1.16.3 highlights a unique phenomenon in gaming. Unlike other titles that die when the developer stops updating them, Assetto Corsa was taken over by the community.
You can resolve this without a full reinstall by tricking the software into seeing the version it expects. Go to in the top right corner, then
If you are trying to launch Assetto Corsa or join a multiplayer server and see the error you are not alone. This is a common frustrating roadblock for sim racers. It typically happens when using Content Manager, the popular third-party launcher for the game.
The root cause is usually a small, official update to Assetto Corsa (often bringing the version to ) that tools like Custom Shaders Patch (CSP)