Here are the most effective methods, ranked from fastest to most reliable. Method 1: The changelog.txt Edit (Fastest Fix)
Assetto Corsa is a racing simulation game that has captured the hearts of many players worldwide. However, the requirement of version 1.16.3 to play online has rendered the game obsolete for many users. The community has been vocal about this issue, and it is up to the developers to take action to resolve it.
If you have confirmed your game files are up to date but the error persists, you can trick Custom Shaders Patch into thinking you are on v1.16.3 by editing the version file.
Some users fix this by simply reinstalling or updating CSP within the Content Manager settings under Settings > Custom Shaders Patch > About & Updates . assetto corsa is obsolete v1163 is required fix
By doing this, CSP will no longer find the "note" to read and will stop generating the error.
Despite it being 2026, many mods, servers, and CSP versions still look for the older v1.16.3 build, or they get confused by newer, minor steam updates that have occurred over the years. This article will walk you through exactly why this happens and, more importantly, how to fix it permanently. Why am I seeing "Assetto Corsa is Obsolete"?
Custom Shaders Patch determines your game version by reading a single text file in your Assetto Corsa root folder: [10†L11-L13]. This file is created when Kunos releases updates. When your game updates to v1.16.4, this file is automatically modified to include a new entry: Here are the most effective methods, ranked from
The future of Assetto Corsa is uncertain. While the game remains popular, its obsolescence is becoming increasingly apparent. The requirement of version 1.16.3 to play online has created a significant barrier to entry for new players and has frustrated existing ones.
For players seeking to fix the v1.16.3 requirement issue, here are some additional resources:
Fortunately, this bug rarely means your game is actually outdated. In most cases, your version is fully updated to v1.16.3 or v1.16.4, but an initialization mismatch tricks the software into blocking your launch. The community has been vocal about this issue,
Older builds (pre-1163) rely on deprecated graphics and physics APIs. Modern content—from Custom Shaders Patch (CSP) to extended physics (CSP’s “Extended Physics” or RainFX)—explicitly requires the 1163 executable.
Select a different version (newer or older) from the list to force an update.
If modifying the changelog does not work, try these additional fixes:
I need to search for information. I'll search for the exact error phrase and related terms to gather comprehensive information. search results show several relevant discussions. Result 0 seems to be a Steam discussion about the error. Result 6 might be a specific discussion about the error. Result 3 might be a blog post with fixes. Result 4 is a GitHub page with troubleshooting. Result 5 is a Russian discussion. Result 7 is a hosting knowledgebase. I need to open these to gather more details. information gathered is sufficient. The error is essentially a false positive due to a version check mismatch between AC's changelog and CSP. The fix involves editing or renaming the changelog.txt file. I will structure the article with an introduction explaining the error, its causes, solutions, and a troubleshooting table. I need to cite the sources. you spend any serious time with Assetto Corsa modding, you have likely encountered the frustrating message: “Assetto Corsa is obsolete (v1.16.3 is required).” This error usually blocks the vehicle showroom or prevents race sessions from starting. It can be confusing because the error claims your game is outdated, yet you might be running a perfectly updated copy.
Furthermore, the game's obsolescence has also affected its competitive scene. Professional racing teams and drivers who use Assetto Corsa for training and competition are now at a disadvantage, as they are unable to participate in online events and championships.