Assetto Corsa Is Obsolete V1.16.3 Is Required [extra Quality] May 2026

This error message typically appears when Content Manager (CM) or a specific mod (like Custom Shaders Patch

If the server explicitly bans CSP versions above 0.1.80, you have two choices: install a portable instance of the game for legacy mods, or find a better server. Modern sim racing has moved on; servers stuck on 0.1.80 are going extinct. assetto corsa is obsolete v1.16.3 is required

If your game is legally owned via Steam, you likely already have the latest version (typically v1.16.3 or v1.16.4), and you can resolve the warning using these methods: This error message typically appears when Content Manager

For the casual driver, this error is confusing. You bought the game on Steam. It updates automatically. How can it be "obsolete"? Why is it asking for a version number that doesn't seem to exist in your Steam library? And most importantly: Do you actually need to downgrade, or is there a fix? If you use Content Manager, custom launchers, or mods (e

Racing without it means missing these fixes and being unable to join 90% of active online servers.

• If you use Content Manager, custom launchers, or mods (e.g., Sol, Custom Shaders Patch, x264 packs), update them to latest releases that support v1.16.3.
• Temporarily move the "mods" and "extensions" folders (or any third-party files you manually placed in the game directory) to another folder, then relaunch the game to see if the error disappears.
• Reintroduce mods one-by-one, updating each to its compatible version.

To get back on the track, follow these steps to ensure you are on the required version: Verify Game Files: Right-click Assetto Corsa in your Steam Library > Properties Installed Files Verify integrity of game files

If you spend any time in the Assetto Corsa modding community, you have likely seen the dreaded phrase: "Assetto Corsa is obsolete. v1.16.3 is required."