If your game is actually at v1.16.4 (a minor patch that occurred years ago but still causes this error), you can trick Content Manager into thinking it is v1.16.3 .
Match multiplayer server or mod network requirements
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 However, this is exactly what triggers the v1163 error: assetto corsa is obsolete v1163 is required fix hot
: Save the file and restart Content Manager. The error should vanish immediately. Alternative Solutions
Content Manager sometimes loses track of the correct Steam Application ID (AppID) for Assetto Corsa. You can manually force Content Manager to look for the correct ID. Open Content Manager and navigate to (top right). Click on the Content Manager tab, then select General . Look for the Steam AppID field. If your game is actually at v1
The error occurs because the game performs a file integrity check (checksum) when connecting to a server. If even a single file—a car texture, a shader, a sound effect—does not match the server’s expected "vanilla" v1.16.3 standard, the server rejects you.
If you encounter these symptoms, you'll need to take action rather than just ignoring the error. However, this is exactly what triggers the v1163
Are you using the version of Content Manager?
Here is a comprehensive guide and hot fix to resolve the issue and get you back on track. What Causes the "Assetto Corsa is Obsolete" Error?
Check file timestamps and read-only flags
Navigate to your Assetto Corsa root folder (usually Steam\steamapps\common\assettocorsa ). Locate a file named . Open it with Notepad. If it says 1.16.4 or higher, change it to 1.16.3 . Save the file and restart Content Manager. 2. Update Content Manager
