Assetto Corsa Is Obsolete V1163 Is Required Fix Hot (2026)

Assetto Corsa relies on a small text file in its directory to identify itself to Steam. If this file is missing or contains the wrong number, Content Manager will think your game is obsolete.

Content Manager needs permission to read the version data straight from Steam. If Steam lacks admin privileges, Content Manager assumes the version is missing or obsolete.

Content Manager sometimes reads the version string incorrectly if your Windows username or Steam directory uses non-Western script or special symbols (such as Cyrillic, Kanji, or accented vowels). assetto corsa is obsolete v1163 is required fix hot

This error happens because Content Manager cannot detect the correct version of your base game. It usually triggers after a game update, a Content Manager reinstallation, or a change in your file pathways.

That's it. The error should now be gone. By making this simple edit, you have tricked CSP into thinking your game is the exact version it expects. This fix works because, as we've established, the change from 1.16.3 to 1.16.4 didn't actually affect any of the files or systems that CSP uses. Assetto Corsa relies on a small text file

You likely saw a message resembling: "Assetto Corsa is obsolete v1163 is required" or a pop-up saying a specific version of Content Manager is required.

The "Assetto Corsa is obsolete" error is a classic case of a false alarm caused by a tiny mismatch between a game file and a mod. By understanding the cause, you can apply one of the quick edits above and be back to racing in minutes. For a permanent, worry-free solution, the best practice is to simply keep your game and all your major mods updated to their latest versions. If Steam lacks admin privileges, Content Manager assumes

Are you using the version of Content Manager?

This is a community-made, comprehensive mod that almost every modern Assetto Corsa player uses. It massively overhauls the graphics, physics, and weather, and is essential for running many of the game's most popular car and track mods. It is managed through a separate launcher called .

If it says 1.16.4 or another version, change it to 1.16.3 . Save the file and close it. Restart Content Manager.

A checksum mismatch occurs when a file on the client PC and on the server are not identical. This is particularly common after game updates. When players get this error, the most frequent cause is that a recent Assetto Corsa update has not been applied to either the client or server.