If UPnP does not resolve the issue, manually forward these ports in your router settings to achieve an "Open NAT" status: Port 3074 (UDP and TCP) Port 53 (UDP and TCP) Port 80 (TCP) Port 500 (UDP) Port 3544 (UDP) Port 4500 (UDP) 5. Disable Conflicting Software

Open your Windows Start Menu, type , right-click Command Prompt , and select Run as Administrator .

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters Look for in the right pane.

Before attempting to patch your game, ensure your system and game files meet these requirements:

If you are playing a backed-up or modified version of the game, tools like , Hamachi , or R some LAN simulate a local area network over the internet.

To help tailor these troubleshooting steps to your exact setup, could you tell me a bit more about your situation? Are you playing on or an Xbox console ?

If UPnP fails to give you an Open NAT, manually forward these specific ports in your router settings to your gaming PC or Xbox console IP address: Port 3074 (UDP & TCP) Port 53 (UDP & TCP) Port 80 (TCP) Port 500 (UDP) Port 3544 (UDP) Port 4500 (UDP)

You cannot join public lobbies directly from the PC menu. You must be invited by someone currently playing on an Xbox console . Once in their session, matchmaking functions normally.

Before diving into troubleshooting, it's important to understand the current landscape. In 2020, Forza Horizon 3 was delisted from digital stores due to licensing agreements, meaning new players can no longer purchase the game digitally. However, for those who already own it, the game remains accessible in their libraries.

Xbox Live requires several ports to be open for direct communication, particularly for private lobbies.

: Since the game is delisted from the Microsoft Store, you must install it directly through your Xbox app Library if you already own it. Important Limitations