Assetto Corsa Is Obsolete V1.16.3 | Is Required
Many old tutorials tell you to right-click Assetto Corsa in Steam -> Properties -> Betas -> Select "v1.16.3 - public". Be careful with this. If you roll back your Steam version to 1.16.3, you will lose compatibility with modern CSP and almost all 2024/2025 mods (No Hesi, SRP, etc.). This is usually the wrong move.
This sounds ridiculous, but it is a known issue. Windows Defender sometimes flags the encrypted mod DLLs as trojans (false positives) and quarantines them. When the mod tries to run, it can't find the encryption key and throws the "obsolete" error as a failsafe.
The error message is hyperbolic but poignant. Assetto Corsa is a decade old. The fact that we are manually spoofing version numbers to keep it alive is proof of its obsolescence—and simultaneously, its immortality.
v1.16.3 is required isn't a bug; it's a handshake between two eras of modding. The game is technically "obsolete," but the community has built a life-support system so robust that it outpaces modern sims in features.
If you see this error again, don't panic. Don't uninstall. Just open Content Manager, update your CSP, and spoof the number. You’ll be back on the Nordschleife in traffic within two minutes.
Final verdict: Your copy of Assetto Corsa is not obsolete. The error message is just a cry from an older server that needs a little white lie to let you in.
Have you fixed the "v1.16.3 is required" error using version spoofing, or did you downgrade your Steam build? Let us know in the comments below.
The error message "Assetto Corsa is obsolete (v1.16.3 is required)" is a common technical hurdle for sim racers using third-party tools like Content Manager (CM) or the Custom Shaders Patch (CSP).
While it sounds like your game is outdated, it is often a false positive or a minor configuration glitch within your modded environment. This guide explores why this error occurs and provides step-by-step solutions to get you back on the track. Why Does This Error Occur? assetto corsa is obsolete v1.16.3 is required
Version Mismatch: Content Manager occasionally misreads the game's version string from the local files, especially after small background Steam updates.
Corrupted Manifest Files: Steam uses "appmanifest" files to track versions; if these are out of sync, CM may believe your installation is "obsolete" even if it is technically current.
Modified Root Files: Certain mods or manual file changes (like editing acs.pdb) can trigger version-check failures. How to Fix the "Obsolete" Error 1. The Quick "Changelog" Fix
If you are already on the latest version of Assetto Corsa but still see the error, you can manually update the version string that Content Manager reads.
The error " Assetto Corsa is obsolete (v1.16.3 is required)" is a known bug in Content Manager (CM) and the Custom Shaders Patch (CSP). It typically occurs because the current version of the game (v1.16.4) is actually newer than what the patch expects, causing a version mismatch. Recommended Fixes
You can resolve this issue using one of the following methods: Edit the Changelog (Quickest Fix):
Navigate to your Assetto Corsa root installation folder (usually SteamApps\common\assettocorsa). Open the changelog.txt file.
Change the version number at the top from 1.16.4 back to 1.16.3. Save the file and restart Content Manager. Enable Untested Updates in Content Manager: Open Content Manager and go to Settings at the top. Many old tutorials tell you to right-click Assetto
Click on the Content Manager tab on the left, then select General.
Find the "Test access" section and enable "Update to untested version". Restart Content Manager to see if it clears the error. Update or Reinstall Custom Shaders Patch (CSP):
The error is often tied to an older version of CSP. In Settings > Custom Shaders Patch > About & Updates, try installing the latest available version (e.g., v1.79 or newer) instead of the "Recommended" one.
If problems persist, you can select "Delete patch" and perform a clean reinstall of CSP through Content Manager.
Despite this error message appearing, many users find that the game and mods still function normally if the message is simply ignored.
Are you experiencing any actual gameplay crashes, or does the error just appear as a notification when you launch? Installed Custom Shaders Patch is obsolete - OverTake.gg
The "Obsolete" Bug: Why Content Manager Thinks Your Assetto Corsa is Outdated If you’ve recently fired up Content Manager only to be met with a red error shouting that your Assetto Corsa is obsolete v1.16.3 is required
, you aren't alone. It’s a classic case of the software being "too smart" for its own good. Ironically, this error usually pops up because your game is up-to-date than the modding tools expect. Why is this happening? Have you fixed the "v1
The root cause is usually a small, official update to Assetto Corsa (often bringing the version to ) that tools like Custom Shaders Patch (CSP)
or Content Manager don't yet recognize. Because these tools are hard-coded to look for v1.16.3 as the "final" version, they assume anything else is either a pirated copy or an ancient build, and they refuse to launch the race. Quick Fixes to Get Back on Track
You don't need to reinstall your entire game or find an old patch. Here are the community-tested ways to bypass the "obsolete" message:
This message indicates that you’re trying to join an Assetto Corsa online server or launch a specific mod/tool (e.g., Content Manager, Custom Shaders Patch, or a racing league’s integrity check) that strictly requires version 1.16.3 of the game, but your installed version is older or newer (or the check falsely flags it).
Quick review:
Verdict: The message is technically correct if your game isn’t genuine or has modified core DLLs. The server requirement is reasonable for competitive leagues to ensure fairness. But for most single-player or casual modded users, it’s a nuisance you can ignore or fix by reinstalling the official 1.16.3 version.
Here’s a concise write-up explaining the situation where Assetto Corsa v1.16.3 is required and why older versions are considered obsolete.