The error message Assetto Corsa is obsolete (v1.16.3 is required)" a common version-detection bug that occurs when using the Content Manager (CM) alternative launcher or the Custom Shaders Patch (CSP)
than 1.16.3 (such as v1.16.4) because the modding tools (specifically older versions of Content Manager) fail to recognize the minor version increase as compatible. How to Fix It assetto corsa is obsolete v1163 is required link
While it sounds like your game is ancient and broken, it’s actually a very common technical hurdle. Here is a deep dive into why this happens and how to fix it. The error message Assetto Corsa is obsolete (v1
Reinstall or Patch:
Note: Steam may try to “repair” the file. To prevent this, launch the game directly from Content Manager with the “Force 32-bit” option disabled (or enabled, depending on mod). You can also set your Steam to “Only update this game when I launch it” and never launch via Steam. Reinstall or Patch: Note: Steam may try to
Corrupted Version Files: Sometimes, a mod or a crash can corrupt the version.txt file or the executable, leading the game to report the wrong build number.
The "Changelog" Trick: This is the most common community fix.