Fix: “Assetto Corsa is Obsolete – v1163 is Required” (Content Manager Fix) If you’re seeing the error “Assetto Corsa is obsolete – v1163 is required” when trying to join an online server, don’t panic. Your game isn’t broken, and you don’t need to reinstall Windows. This is the most common online matchmaking error in Assetto Corsa today. Here’s exactly why it happens and how to fix it in under 60 seconds. What Does “v1163 is Required” Mean? Assetto Corsa’s final official game version is v1.16.3 (often shortened to v1163). The error means one of two things:
Your game is actually outdated (rare, but possible if you disabled auto-updates on Steam). Your server checksum is mismatched (very common) – meaning Content Manager or the server thinks you’re on an older version due to a file mismatch or config issue.
The 3-Step Fix (Works 99% of the Time) Step 1: Verify Your Game Version in Steam Even if you think you’re up to date, do this:
Open Steam → Go to Library . Right-click Assetto Corsa → Properties → Installed Files . Click Verify integrity of game files . Wait for it to finish. Steam will re-detect and reacquire v1.16.3 automatically. assetto corsa is obsolete v1163 is required fix hot
Step 2: Force the Correct Version in Content Manager This is the real solution for most users:
Open Content Manager . Go to Settings → Content Manager → General . Look for “Assetto Corsa version override” . Manually set it to 1.16.3 (or type 1163 ). Click OK and restart Content Manager.
Why this works: Content Manager sometimes caches an old version number from a beta or previous patch. Forcing it removes the confusion. Fix: “Assetto Corsa is Obsolete – v1163 is
Step 3: Disable “Check for obsolete EXE” (Last Resort) If the error persists on your own hosted server :
In Content Manager, go to Drive → select your server. Click Server Configuration → Advanced . Uncheck “Check for obsolete EXE” . Save and restart the server.
⚠️ Only do this for private/friendly servers. Public servers require the version check enabled. Still Getting the Error? Try This Advanced Fix Some mod cars or tracks corrupt the internal acs.exe version signature. Here’s the nuclear option: Here’s exactly why it happens and how to
Delete the file: steamapps/common/assettocorsa/version.txt Re-verify game files in Steam (Step 1 above). Steam will recreate the correct version file.
Preventing This in the Future