When software or a game becomes "obsolete," it means that it's no longer supported or updated by its developers. For Assetto Corsa, being on an older version might lead to compatibility issues, bugs, or, as in your case, a "hot issue" that requires a specific patch (v1.16.3) to fix.
While the changelog fix solves this specific problem, other issues can pop up. Here are a few quick tips for maintaining a stable modded Assetto Corsa installation.
Essentially, it's a communication problem. Your game is actually more up-to-date than the mod expected, and the mod is wrongly interpreting that as a problem.
If a background update corrupted a core game file, Content Manager cannot read your version number. Steam can automatically scan and replace any broken files. Open your . Right-click on Assetto Corsa and select Properties . Navigate to the Installed Files tab. Click Verify integrity of game files .
Select the latest recommended version or click if it's missing. Verify Game Files Ensure your base game isn't actually corrupted. Open Steam Library . Right-click Assetto Corsa > Properties > Installed Files . Click Verify integrity of game files . Reset Content Manager assetto corsa is obsolete v1163 is required fix hot
Go to your (usually steamapps\common\assettocorsa ). Find and open the changelog.txt file.
Assetto Corsa is obsolete (v1.16.3 is required)" error is a common version-mismatch bug within Content Manager (CM) Custom Shaders Patch (CSP)
Because the game version in the files is higher than what the mod expects, the software incorrectly flags it as "obsolete". ⚡ Quick Fixes
Assetto Corsa remains a beloved racing-simulation title with a dedicated modding community, but players sometimes encounter startup errors that block the game from launching. One common message is “Assetto Corsa is obsolete — v1163 is required,” which typically means the game client or one of its components is out of date relative to what a launcher, mod, or multiplayer service expects. This essay explains likely causes, step-by-step fixes, and preventive measures so players regain access quickly and avoid similar interruptions. When software or a game becomes "obsolete," it
Wait for Steam to scan your directory. If it finds missing or altered files, it will automatically download the correct v1.16.3 files. 4. Fix the Content Manager Game Path
After verifying, Steam will restore acs.exe to v1.163. Now you must tell Content Manager to stop changing it:
Are you using the or Full (paid) version of Content Manager?
Go to your Assetto Corsa root folder (usually SteamLibrary\steamapps\common\assettocorsa ). Locate the file named acs.exe . Delete it. Go back to Steam and again. Here are a few quick tips for maintaining
As a last resort, if the game is heavily modded or has become too problematic, consider reinstalling it. Make sure to back up any save files or important data first.
Vanilla Assetto Corsa (the official version from Steam) stopped receiving major updates years ago. The current legitimate Steam build is version (often shortened to v1163). However, thanks to Ilja Jusupovs (x4fab) and the Custom Shaders Patch (CSP), the game has evolved far beyond its original 2014 limitations.
By renaming the file, CSP cannot find the changelog.txt it's looking for, so it stops checking the version number and the error is bypassed. This is another great, low-risk option.