Assetto Corsa Is Obsolete V1163 Is Required Fix -

If a file like acs.exe or acs.pdb is genuinely corrupted, Steam can repair it automatically. Open your . Right-click Assetto Corsa > Properties . Go to the Installed Files tab. Click Verify integrity of game files .

Open [Content Manager], navigate to Settings > Custom Shaders Patch , and check for updates. Updating to a newer or recommended version of CSP often resolves compatibility checks.

This message appears to be a for the racing simulation game Assetto Corsa .

: If you genuinely lack files, right-click Assetto Corsa in Steam , go to Properties > Installed Files , and click Verify integrity of game files . assetto corsa is obsolete v1163 is required fix

This is one of the most common headaches in the Assetto Corsa community, particularly for players returning to the game after a break or those doing a fresh install. It usually happens right after a major Steam update, leaving players confused because Steam insists the game is up to date.

The most confusing part of this error is that your game is likely completely up to date—usually running version 1.16.4 or later on Steam . The error occurs because or your installed Custom Shaders Patch (CSP) is failing to recognize the newer version of the game. It misinterprets your modern version as an old, incompatible build, completely halting the loading screen. 🛠️ The Step-by-Step Fixes Fix 1: Edit the changelog.txt File (The Quickest Bypass)

You are no longer driving a car model. You are driving a forgotten physics branch that was deemed “too complex for casual players.” If a file like acs

The message appears as a pop-up in Content Manager (CM), typically near the settings. It states: "Assetto Corsa is obsolete (v1.16.3 is required)" . This is a false positive error message — your base game is almost certainly not broken or outdated in any meaningful way.

Steam incorrectly thinks your game is up to date when it is not.

Why? Because v1.1.63 allowed asymmetric tire heating , dynamic brake duct simulation , and chassis flex on open-top cars —features later versions neutered for console compatibility. Today, if a mod has .dds textures with the metadata Pirelli_2015 or uses the encrypted tyres_v1163.ini , your modern v1.16.4 Assetto Corsa will scream Go to the Installed Files tab

However, it's essential to note that these solutions may not be officially supported by the game's developer, and players may need to take risks to fix the issue. Ultimately, it's up to Kunos Simulazioni to release an official fix to address the problems and bring the community back together.

This error appears deceptively simple but can be a nightmare to troubleshoot. It prevents you from joining online races, locks you out of leagues, and makes it seem like your game is permanently broken.