The Forza Horizon IPSEC issue can be caused by many different factors but we can identify the following chiefly responsible for the issue: Before moving on with the solutions, make sure the Xbox/game servers are up and running. Moreover, check if trying any of the following short solutions/workarounds sort out the issue for you:
For Xbox Users:
Clear the Alternate Mac Address of the Xbox Console
The alternate Mac address of Xbox is used to connect to a secure network that only allows the devices with whitelisted Mac addresses. If you have set up an alternate Mac address for your Xbox, it may conflict with the Forza Horizon game protocols, resulting in the IPSEC 0x00000000 error.
Delete Saved Data of Forza Horizon on the Xbox Console
The Saved Data of Forza Horizon on your Xbox console can become corrupt due to many factors like a badly applied game or OS update etc. This corrupt data of the game may cause the IPSEC error at hand. In such a scenario, deleting the saved data of Forza Horizon may solve the problem.
For Windows Users:
Using the ‘Fix it’ Button in Xbox Networking Settings of Your PC
Forza Horizon might show the IPSEC issue if the Xbox Networking of your PC is not configured optimally for your connection and fixing the same might solve the IPSEC problem.
Change the Date and Time Settings of Your Device
If the date/time settings of your device are not set correctly (especially, if daylight savings are enabled), then the game may fail to sync properly with the Forza Horizon servers, resulting in the IPSEC issue at hand.
Change the DNS Settings of Your Device
The DNS servers are used to resolve the web addresses related to different online content and if the DNS server of your system/ network is failing to resolve the web server addresses of Forza Horizon, it may fail the connection handshake. In such a case, changing the DNS settings of your device may solve the problem. For illustration, we will discuss the process of changing the DNS servers of a Windows 10 PC.
Edit the Settings of Different System Services
Different system services are essential for the operation of the Forza Horizon game and if any of these services is in an error state, it may cause the network issue at hand. Moreover, the presence of a conflicting service may also cause problems. In such a case, editing the settings of the relevant system services may do the trick.
Start the Peer Networking Grouping service and Set its Startup Type to Automatic
Start the IP Helper Service and its Dependencies
Stop the National Instrument Services and Set Their Startup Type to Disabled
Disable Teredo Filter in the Router Settings
Forza Horizon might show the IPSEC error if your router is blocking access to the game’s servers by limiting the Teredo-based traffic. In this context, disabling the Teredo filter in the router’s settings may solve the IPSEC error of Forza Horizon. If that did not work, then forward the following ports in the router’s settings, required by the Forza Horizon game, and then check if the game is working fine. Forza Horizon 4 – PC Forza Horizon 4 – Xbox One For Xbox, you may forward the following ports:
Clean Boot Your PC and Disable/Uninstall the Conflicting Applications
In the Shared Windows environment, in a rare case, some apps may conflict with each other for the system resources and if your system has an application that conflicts with the Forza Horizon, it may force the game into the IPSEC 0x00000000 error. Before proceeding, check if reinstalling the PC’s Xbox app clear out the IPSEC error. Following applications are reported by the users to cause the IPSEC issue at hand and if any of these applications are present on your system, then either you disable it or uninstall it:
Edit the Firewall Settings of Your Device
The blocking of Forza Horizon’s traffic by the firewall of your system, either unintentionally by the user or by another app, may result in the IPSEC 0x00000000 networking issue. In such a case, editing the Firewall Settings of your device to allow the Forza Horizon traffic may solve the problem. Warning: Proceed at your own risk as editing the firewall’s settings of your system may expose your data/system to online threats.
Reinstall the Forza Horizon Game
Forza Horizon’s installation might become corrupt due to a sudden power failure or an essential game file is deleted by another application (like antivirus). This corrupt installation of the Forza Horizon game may cause the IPSEC issue at hand by not fulfilling the network handshake. In this context, reinstalling the Forza Horizon game may solve the problem. Before proceeding, make sure to back up the Forza Horizon’s essential info/data. If nothing has worked, then check if creating a new Xbox account and using that account to play Forza Horizon sorts out the issue. If the issue persists, then check if setting up a DMZ (at your own risk) on your router resolves the issue. If it goes through, then check the router for the misconfigured setting creating the issue. We strongly recommend not to permanently use the DMZ on your router due to security concerns. If nothing works out, then you may contact Forza Horizon support to check if your account is under a shadowban.
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