If you’ve just tried to join an online server or opened Content Manager only to be greeted by a jarring message stating "Assetto Corsa is obsolete, v1163 is required," you aren't alone.
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.
In this post, we’ll break down why this error happens and, more importantly, exactly how to fix it so you can get back on the track.
Once you fix the v1163 error, protect your installation: assetto corsa is obsolete v1163 is required fix
Reinstall Assetto Corsa through Steam. Once finished, do not launch the game immediately.
If you are using the vanilla launcher or Content Manager isn't fixing the error automatically, you will need to manually replace your game executable with the v1163 version.
Warning: This involves replacing game files. Always back up your original files first! If you’ve just tried to join an online
AssettoCorsa.exe to AssettoCorsa_v2.exe (or similar) to keep it safe.AssettoCorsa.exe into the main folder.Before touching anything, navigate to your assettocorsa root folder (usually C:\Program Files (x86)\Steam\steamapps\common\assettocorsa). Copy the following folders to your desktop:
Ironically, the solution is usually a mix of "downgrading" your executable while "upgrading" your patch files.
Here are the two methods to solve this, ranked from easiest to most technical. Backup: Rename your current AssettoCorsa
If you want, tell me: Steam or non‑Steam, and whether you use Content Manager or a specific multiplayer server, and I’ll give exact commands/paths.
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