Assetto Corsa is obsolete (v1.16.3 is required)" error typically occurs because the Custom Shaders Patch (CSP) or Content Manager (CM) misidentifies your game version after a small Steam update. Even if your game version is technically higher (e.g., v1.16.4), the mods may still trigger this warning. Quick Fixes for the "Obsolete" Error
If the error appears when loading a car or track:
In Content Manager, go to Settings > Custom Shaders Patch > About & Updates. Assetto Corsa is obsolete (v1
The "Extra Quality" settings (part of the Extra FX module in CSP) often cause performance drops or visual bugs if not configured correctly.
: If the error persists, use Steam to ensure no core files are corrupted. Right-click Assetto Corsa in your Steam Library. Properties Installed Files Verify integrity of game files Reset Content Manager Settings Fix "Obsolete" Car/Track Content If the error appears
Navigate to your Assetto Corsa root folder (usually steamapps\common\assettocorsa). Open the file named changelog.txt .
He sat in his rig, the low hum of his fan competing with the stagnant heat of the room. On his screen, the dreaded "Session Lost" dialog box mocked him. He wasn't interested in the stock Kunos content anymore—he had driven that asphalt a thousand times. He was hunting the "Extra Quality." That was the rumor circulating the dark corners of the modding scene. A specific configuration of shaders and physics that only the mythical v1163 build could handle properly. Right-click Assetto Corsa in your Steam Library
If you are seeing "Extra Quality" errors or your graphics look sub-par even after the version fix, the issue likely lies with your CSP configuration.