Fix: Forza Horizon “You Have Been Disconnected From the Session” Error

Muhammad ZubyanPublished on September 30, 2025
Zubyan is a certified PCHP and Google IT Support Professional.

When attempting to join online servers in Forza Horizon, many players face a recurring issue where the game disconnects within minutes of entering a session. The error usually appears as:

“You have been disconnected from the session”

This error is not directly caused by the game, but rather by how your system communicates with Forza’s servers. In most cases, the root cause is either a misconfigured Teredo adapter or NAT type restrictions within your network settings. Since Forza Horizon depends heavily on stable server communication, even a small misconfiguration can result in frequent disconnections.

Important to note: this error is network-dependent and speculative. Its nature varies across systems — factors such as your operating system, ISP configuration, router policies, or firewall permissions can all play a role. That’s why there is no single guaranteed fix. However, the most reliable and widely effective solution is to reset and reconfigure the Teredo adapter, as it restores the IPv6 tunneling required by Xbox Live and Forza servers.

Step 1 – Reset the Teredo Adapter

Follow these commands to reset and correctly configure Teredo. This will re-establish a stable link between your PC and the Forza Horizon servers:

  1. Open Command Prompt as Administrator. (This is required for network-level changes.)
  2. Type the following command:
    netsh int ipv6 set teredo client teredo.trex.fi

  3. Restart your PC to apply the configuration.
  4. After restart, open Command Prompt again as Administrator and enter:
    netsh interface Teredo set state type=default

  5. Restart your PC once more to finalize the changes.
  6. Now launch Forza Horizon and attempt to join an online session. In many cases, the error should no longer appear.

Step 2 – Check for NAT Restrictions

If the above steps don’t resolve the issue, your connection might still be restricted by NAT type limitations set by your Internet Service Provider (ISP). A strict NAT type can prevent stable multiplayer connections in Forza Horizon. The recommended fix is to:

  • Contact your ISP and request a static IP address.
  • This usually results in a more open NAT type, which improves connectivity for online gaming.
  • Be aware, however, that a static IP can introduce potential security considerations, so it should be configured carefully.

Final Option – Contact Forza Support

If the issue still persists after performing the above steps, the best course of action is to contact Forza Support. Provide them with:

  • The exact error message (“You have been disconnected from the session”)
  • Your system and network configuration details
  • The troubleshooting steps you’ve already tried

This allows the support team to analyze your case more effectively and offer a tailored solution based on your network environment.

Muhammad ZubyanPublished on September 30, 2025
Zubyan is a certified PCHP and Google IT Support Professional.
ABOUT THE AUTHOR
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Muhammad Zubyan


Muhammad Zubyan is a certified Google IT Support Professional with over 7 years of extensive experience. He has worked on more than 1500 computers, gaining valuable insights that enable him to detect and troubleshoot any complicated root cause of Windows-related issues and errors. In addition to managing Appuals as a Senior Editor, he is currently developing his own Game Optimization program that caters to both gamers and casual users alike.