At its core, this error is a . Assetto Corsa (the base game) receives updates periodically. The official Steam version automatically updates to the latest public build (which is currently above v1163). However, many mods, custom launchers (like Content Manager), and private servers are locked to a specific game version to ensure stability.
The error message is typically a false positive caused by the Custom Shaders Patch (CSP) failing to recognize minor game updates—specifically, when your game is actually on a newer version like v1.16.4 . Why This Happens
Navigate to your (usually steamapps\common\assettocorsa ). Locate the file named changelog.txt . Open it with Notepad.
If you are actually on an older version, right-click the game in Steam > Properties > Installed Files > Verify integrity of game files .
file in the game folder with an original or recommended version from Check 32-bit Mode : In Content Manager, navigate to Content Manager
Users often add custom launch parameters (e.g., for Content Manager or third-party launchers) which may conflict with version checks.
error assetto corsa is obsolete - help - Steam Community
This error often occurs when mods or external plugins (e.g., Content Manager plugins, custom apps, apps like Sol, CrewChief, Sol-compat, Custom Shaders Patch, or SRS/Assetto Corsa Competizione bridging tools) are incompatible with the current game build.