Restart Content Manager and try refreshing the Server List . This forces the launcher to use a different protocol to ping game servers. 4. Optimize Network and DNS Settings
Sometimes, network connectivity issues arise from outdated DNS cache. Open as an administrator. Type ipconfig /flushdns and press Enter. Restart your computer. 7. Disable Router "Intrusion Detection"
You’ve got your wheel calibrated, your favorite track loaded, and you’re ready to race. But just as you try to join an online lobby, Assetto Corsa hits you with that dreaded gray box:
Open the and navigate to Network and Internet > Network and Sharing Center . Click on Change adapter settings in the left-hand menu. Restart Content Manager and try refreshing the Server List
Many custom tracks require official Kunos DLC packages (like the Porsche Packs or Japanese Pack) to function because they borrow base assets. Ensure you own the required DLC.
Here are the most common solutions, ranked from the quickest checks to more advanced configurations.
If you are using a VPN, try disabling it, as it may be interfering with the server's IP. Restart your computer
To help narrow down the exact cause of your connection failure, please let me know:
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
: Log into your router’s admin gateway via your web browser (usually 192.168.1.1 or 192.168.0.1 ). their policies apply.
Content Manager features a legacy toggle that fundamentally changes how the launcher pings the Kunos master server list. For many users, toggling this option fixes "unavailable" errors instantly. Open . Navigate to Settings in the top right. Click on Drive in the left-hand column. Look for the section labeled Server Browser .
If you are hosting the server and your friends see this error, your router is likely blocking incoming traffic. Assetto Corsa requires specific ports to be open.