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The error message Assetto Corsa is obsolete (v1.16.3 is required)" a common version-detection bug that occurs when using the Content Manager (CM) alternative launcher or the Custom Shaders Patch (CSP)

This typically happens because your game has actually updated to a version (like

) following a minor Steam patch, but the modding tools do not yet recognize the new version number. Quick Resolution: The "Changelog Trick"

The most effective and common fix is to manually edit the game's version identification file to match what the modding tool expects. Locate your root folder : Usually found at C:\Program Files (x86)\Steam\steamapps\common\assettocorsa changelog.txt : This file is located in the main directory. Edit the Version Number : At the very top of the file, you will see VERSION 1.16.4 (or similar). Change this text exactly to Save and Restart : Save the file and restart Content Manager Technical Context & Issues Version Mismatch

: While Steam might say you are up to date, CSP is hard-coded to look for

to ensure compatibility with its physics and rendering hooks. Functional Impact

: In most cases, this is just a visual warning and the game will still launch. However, if the game fails to load or crashes to the menu ("Race Cancelled"), you may need to update your Custom Shaders Patch to the latest recommended version. Root Cause

: Minor updates, such as the addition of promotional cars or esports events (e.g., Ferrari Esport events), can bump the version number without changing core files, causing this software "confusion". Troubleshooting Checklist changelog.txt fix does not work, try these steps:

Assetto Corsa is obsolete (v1.16.3 is required)" error typically occurs because the Custom Shaders Patch (CSP) or Content Manager fails to recognize the latest version of the game (v1.16.4). Quick Fix: Edit the Changelog

The most effective way to bypass this error is to manually "spoof" the version number so the software thinks you are on v1.16.3.

Navigate to your Assetto Corsa root folder (usually steamapps\common\assettocorsa). Locate the file named changelog.txt. Open it with Notepad.

Change the very first version number you see (likely 1.16.4) to 1.16.3. Save the file and restart Content Manager. Alternative Solutions If editing the text file doesn't work, try these steps:

Ignore the Message: Many users report that the game still runs perfectly despite the warning; you can often just click past it.

Update Custom Shaders Patch: Ensure you are using a stable version of CSP (like v1.73 or newer) which may have built-in fixes for this detection issue.

Reset Content Manager: Rename your plugins folder or reset the CSP settings within the Content Manager to force a refresh.

Verify Game Files: Right-click Assetto Corsa in your Steam Library, go to Properties > Local Files, and select Verify integrity of game files. Why is this happening?

This error is usually caused by a small official update (v1.16.4) released years ago that added minor content, such as the Ferrari Esport event cars. Some older versions of Content Manager or third-party mods were hard-coded to look specifically for v1.16.3 and do not recognize any higher version number.

If you need a direct download for the latest Content Manager to ensure compatibility, you can find it at AC Stuff.

This error typically appears when you try to join an online server using Content Manager or the vanilla launcher. It means the server is running a specific game version (1.16.3) that does not match your current installation.

Step-by-Step Guide to Fix the Issue

Quick Troubleshooting

| Symptom | Likely Fix | |---------|-------------| | Steam says game is up to date, but CM shows old version | Verify game files + reinstall CSP patch | | Non-Steam game | Buy Assetto Corsa (often on sale for <$10) | | Version shows 1.16.3 but error persists | Server is actually outdated – find another server |

If you continue to have issues, visit the Assetto Corsa Discord or RaceDepartment forums with a screenshot of the error.

Obsolete Software Report: Assetto Corsa

Summary:

Assetto Corsa, a popular racing simulation game, has been deemed obsolete due to compatibility issues with the latest systems and software. Specifically, version 1.16.3 is required to ensure seamless gameplay, but the current installation is outdated, leading to performance issues and potential security vulnerabilities.

Key Findings:

  1. Outdated Version: The current version of Assetto Corsa installed is below the recommended version 1.16.3, which is necessary for optimal performance and compatibility with modern systems.
  2. Compatibility Issues: The outdated version is causing compatibility issues with newer operating systems, graphics cards, and other software, resulting in:
    • Graphical glitches and crashes
    • Inconsistent frame rates and performance drops
    • Potential security vulnerabilities due to outdated dependencies
  3. System Requirements: The current system configuration does not meet the minimum requirements for Assetto Corsa version 1.16.3, which includes:
    • Updated graphics drivers
    • Compatible operating system (Windows 10 or later)
    • Sufficient RAM and processing power
  4. User Impact: The obsolete software is affecting the user's experience, causing:
    • Frustration due to frequent crashes and performance issues
    • Limited access to new features and content
    • Potential loss of progress and data due to compatibility issues

Recommendations:

  1. Update to Version 1.16.3: Ensure that Assetto Corsa is updated to version 1.16.3 to resolve compatibility issues and improve performance.
  2. System Configuration: Verify that the system configuration meets the minimum requirements for Assetto Corsa version 1.16.3, including updated graphics drivers and sufficient RAM and processing power.
  3. Regular Maintenance: Schedule regular software updates and maintenance to prevent similar issues in the future.
  4. Alternative Solutions: Consider alternative racing simulation games that are actively maintained and updated to ensure compatibility with the latest systems and software.

Action Plan:

  1. Update Assetto Corsa: Download and install version 1.16.3 from the official website or a trusted source.
  2. Verify System Configuration: Check the system configuration to ensure it meets the minimum requirements for Assetto Corsa version 1.16.3.
  3. Test and Validate: Test the updated software to ensure compatibility and performance issues are resolved.
  4. Schedule Regular Updates: Set reminders for future software updates and perform regular maintenance to prevent similar issues.

By following this report and action plan, the user should be able to resolve the compatibility issues and ensure a smooth gaming experience with Assetto Corsa.

3. Fix Content Manager Version Detection (if still showing obsolete)

Sometimes Content Manager reports the wrong version due to a missing steam_api.dll or a modified acs.exe.

Solution:

3. Troubleshooting & Resolution Steps

The following steps should be performed in order to resolve the issue:

7) Reinstalling Assetto Corsa cleanly

  1. Note down any mod lists or settings.
  2. Uninstall via Steam, then delete leftover install folder (steamapps\common\assettocorsa).
  3. Reinstall from Steam, verify, launch before adding mods.

4. User Conclusion

The error "v1163 is required" is a version mismatch protocol. In 99% of cases, verifying the integrity of the game files via Steam resolves the issue. If the user is operating on a non-standard Steam branch, reverting to the default public branch is mandatory to sync with the current server infrastructure.

Status: Resolved upon applying Phase 1 or Phase 2 corrections.

The "Assetto Corsa is obsolete (v1.16.3 is required)" error is a common glitch in Assetto Corsa modding that usually occurs when the Custom Shaders Patch (CSP) Content Manager misinterprets a recent base game update. Why This Happens This error often pops up even if you are on a newer version

than 1.16.3 (such as v1.16.4) because the modding tools (specifically older versions of Content Manager) fail to recognize the minor version increase as compatible. How to Fix It

You can typically resolve this error using one of the following methods: Edit the Changelog File

: Many users fix this by manually tricking the game. Navigate to your Assetto Corsa root folder, open changelog.txt , and change the version number from Update Content Manager & CSP : Ensure you are using the latest version of Content Manager

and the Custom Shaders Patch, as newer updates are designed to recognize later game versions. : Some users report success by replacing the

file in the game folder with an original or recommended version from Check 32-bit Mode : In Content Manager, navigate to Content Manager

and try checking or unchecking the "Use 32-bit version" box. Verify Game Files : Right-click Assetto Corsa in your Steam Library, go to Properties Installed Files , and select Verify integrity of game files to ensure your base installation isn't actually corrupt.

If the game still launches and plays despite the error message, many community members recommend simply ignoring it , as it often doesn't affect actual gameplay. the latest Custom Shaders Patch? error assetto corsa is obsolete - help - Steam Community

The error message " Assetto Corsa is obsolete (v1.16.3 is required)" is typically a false positive caused by the Custom Shaders Patch (CSP) failing to recognize minor game updates—specifically, when your game is actually on a newer version like v1.16.4. Why This Happens

When Kunos released a small patch (updating the game to v1.16.4), it changed the version number in the game's internal files. Certain older versions of Content Manager (CM) and CSP were hardcoded to look for "v1.16.3" and do not realize that "v1.16.4" is a valid, newer version, resulting in the "obsolete" warning. How to Fix It

You can usually resolve this issue using one of the following methods:

The "Changelog" Trick: This is the most common community fix.

Go to your Assetto Corsa root folder (usually SteamLibrary\steamapps\common\assettocorsa). Find the file named changelog.txt.

Open it and change the top version number from 1.16.4 back to 1.16.3. Save the file and restart Content Manager.

Update Custom Shaders Patch: Update your CSP to a newer version (or a "preview" version) via the Settings > Custom Shaders Patch > About & Updates tab in Content Manager. Newer versions are designed to recognize the v1.16.4 update.

Ignore It: In many cases, the error is purely visual. If your game still launches and mods work correctly, you can simply ignore the red warning text in your settings.

Verify Integrity: If the game actually fails to launch, right-click Assetto Corsa in your Steam Library, select Properties > Installed Files, and click Verify integrity of game files to ensure you truly are on the latest version.

Did the "changelog.txt" edit clear the error for you, or is the game still refusing to launch? error assetto corsa is obsolete - help - Steam Community

In the world of Assetto Corsa modding, few messages are as notorious or confusing as the one that declares: "Assetto Corsa is obsolete. v1.16.3 is required."

This story began years ago with the release of the final official update for the game—v1.16, also known as the Bonus Pack 3 , which added legendary content like the Laguna Seca circuit. However, as the modding community took the reins with tools like Content Manager (CM) and the Custom Shaders Patch (CSP), a strange glitch began to haunt sim racers. The Legend of the "Obsolete" Error

The error typically appears when a player tries to install or update Custom Shaders Patch through Content Manager. Even if the player is running the most current Steam version (which is indeed v1.16.3 or v1.16.4), the software throws a fit, claiming the game is "obsolete".

This "ghost in the machine" often stems from a simple mismatch in how Content Manager reads the game's internal changelog.txt or launcher.ini files. How the Community Beat the Glitch

Drivers found several ways to bypass this roadblock and get back on the track:

How to update Custom Shaders Patch in Assetto Corsa (step by step)

The error message " Assetto Corsa is obsolete (v1.16.3 is required)" is a common false-positive that appears when using the Custom Shaders Patch (CSP) Content Manager

. It usually occurs because the game has been updated to a newer version (like v1.16.4) that the patch does not yet recognize as valid. Quick Fixes

You do not need a new download link; you simply need to trick the software into seeing the correct version number or ensure your files are verified. Edit the Changelog (Easiest Fix):

Navigate to your Assetto Corsa root installation folder (usually SteamLibrary\steamapps\common\assettocorsa Find and open the changelog.txt At the very top, change the version number from and save the file. Verify Integrity on Steam: Right-click Assetto Corsa in your Steam Library Properties Installed Files Verify integrity of game files

. This will ensure you have the actual latest version (v1.16.4). Enable 32-bit Version: In Content Manager, go to Content Manager and check the box for "Use 32-bit version" ; some users find this clears the launch error. Update CSP Manually: Ensure you are using the most recent version of Custom Shaders Patch

. Newer versions of CSP often resolve compatibility checks for the 1.16.4 update. The "Long Review" Perspective

While Assetto Corsa (2014) is technically "obsolete" in terms of development age compared to Assetto Corsa Competizione or the upcoming Assetto Corsa Evo , it remains a gold standard for sim racing due to its modding community