Despite the ominous wording, this error usually doesn't mean your game is actually broken or out of date. Instead, it is typically caused by a mismatch in how third-party mods read the game's version file. The Conflict: Assetto Corsa's official development ended years ago, with
The final, simplest approach is often to do nothing. The error message itself does not always prevent the game from functioning correctly. In many cases, players can simply click through the warning and continue with their session. Additionally, CSP developers typically release updates to incorporate new version numbers, ensuring that the patch is updated to understand future releases. As one community member noted, the error did not appear to cause any functional issues in their testing.
If your base game is updated and you still get the error, it means your current version of the Custom Shaders Patch is causing the conflict. Open .
To get back on the track, you will need to ensure your base game and your mod versions match up perfectly. Follow these steps in order. 1. Update Your Base Game on Steam
: You are running an old version of the game. assetto corsa is obsolete v1.16.3 is required
Ironically, the very fact that you are getting this error proves that Assetto Corsa is obsolete. The community is so active that Kunos released a surprise update years after the game’s “lifecycle” ended, and modders had to scramble to catch up.
Go to (top right) > Content Manager (left tab) > General .
Wait for the download and installation to finish automatically. 2. Verify and Re-Link the Game Path
. Steam will detect if you're missing the v1.16.3 files and download them. Check Beta Branches: In the same Properties menu, go to the tab. Ensure "Beta Participation" is set to Update Content Manager: Despite the ominous wording, this error usually doesn't
To stop this error from happening again, always launch Steam before opening Content Manager. Keeping your Content Manager and CSP builds set to automatic updates will also prevent version mismatches when joining heavily modded public servers. To help narrow down the issue, please let me know:
At first glance, this error message—often encountered when trying to join a server or launch a mod—is infuriating. It implies that your game is outdated, that you need to download a specific, older patch, and that the "current" version of the game on Steam isn't good enough. It feels like a step backward.
Make sure you aren't opted into any old 'Beta' branches in the Beta tab." Option 2: The "Short & Punchy" (Best for Server MOTD) VERSION ERROR: Your AC build is obsolete. v1.16.3 is required
Select the latest version (or the specific version the server requires). Wait for the download and installation to finish. 4. Bypass the Version Check (If Using Mods) The error message itself does not always prevent
By systematically working through these steps, you will clear the communication block between your mod manager and Steam, clearing the "obsolete" error for good.
Right-click the and select Run as Administrator . Launch Content Manager and try connecting again. 4. Verify Integrity of Game Files
Let it reach the main menu, then exit and try opening Content Manager again. 3. Update Custom Shaders Patch (CSP)