Assetto Corsa Is Obsolete V1.16.3 Is Required May 2026

Do not revert your Assetto Corsa install to 1.16.3 via Steam. You will break 90% of your mods. Instead, follow this modern fix via .

Do not attempt to preserve older versions for “compatibility” with outdated mods. Update to 1.16.3 immediately. Most legacy content works correctly after updating; any that doesn’t is likely abandoned and not worth keeping. Staying obsolete will lock you out of the living Assetto Corsa ecosystem.

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 And most importantly: assetto corsa is obsolete v1.16.3 is required

in CM:

A common culprit for launch failures associated with this error is a corrupted acs.pdb file: Go to your Assetto Corsa root folder. If you have a backup, replace the existing acs.pdb . Do not revert your Assetto Corsa install to 1

In many cases, this error is purely cosmetic and does not prevent the game from running. You can often proceed with your race unless the game actually crashes. Additional Troubleshooting

"Heads up, drivers! If you’re getting an 'Obsolete' error, it’s because your game version is out of date. To join our servers and ensure your mods work correctly, you must be on v1.16.3 How to fix: Restart Steam to trigger the update. If it doesn't start, right-click Assetto Corsa > Properties > Installed Files > Verify integrity of game files Do not attempt to preserve older versions for

Here are a few ways to phrase this, depending on where you're posting it: Option 1: The "Direct & Helpful" (Best for Discord/Forums) Subject: Action Required: Update Assetto Corsa to v1.16.3