If you have launched Forza Horizon 6 and encountered an “Unexpected Error” message, the game has hit an unhandled failure during its initialization or runtime sequence that it cannot recover from automatically. This Forza Horizon 6 unexpected error appears without a specific error code, making it one of the more frustrating issues to diagnose without a structured troubleshooting approach.

This guide covers every verified fix for the Forza Horizon 6 Unexpected Error on Windows PC.

What Causes the Forza Horizon 6 Unexpected Error

  • Gaming Services encountering an unhandled state during game initialization
  • Xbox account authentication producing an unexpected response during launch
  • Corrupted Forza Horizon 6 installation files causing runtime failures
  • Microsoft Store cache in an inconsistent state that triggers unhandled errors
  • Antivirus blocking game components and producing unexpected termination
  • Memory Integrity or Hyper-V causing unhandled kernel-level failures
  • Outdated GPU drivers producing unexpected rendering pipeline errors
  • Windows App package registry in a broken state causing unhandled exceptions

How to Fix Forza Horizon 6 Unexpected Error

Fix 1: Sign Out and Sign Back Into Xbox App

An unexpected Xbox authentication response during Forza Horizon 6’s launch sequence is one of the most common triggers for the generic unexpected error message. Refreshing the session resolves this immediately.

Steps:

  • Open the Xbox App and click your profile icon in the top left
  • Select Sign Out and wait for the process to complete
  • Close the Xbox App through Task Manager completely
  • Reopen the Xbox App and sign back in with your Microsoft account
  • Allow full authentication before relaunching Forza Horizon 6

Fix 2: Repair and Reinstall Gaming Services

A Gaming Services installation in an inconsistent state produces unhandled errors during Forza Horizon 6’s initialization that appear as the generic unexpected error message.

Xbox CMD

Steps:

  • Open Windows Terminal as Administrator
  • Run: Get-AppxPackage -allusers Microsoft.GamingServices | Remove-AppxPackage -allusers
  • Then run: start ms-windows-store://pdp/?productid=9MWPM2CQNLHN
  • Install Gaming Services fresh from the store page that opens
  • Restart your PC and relaunch Forza Horizon 6

Fix 3: Reset Forza Horizon 6 Through Windows Settings

Steps:

  • Press Win + I and navigate to Apps, then Installed Apps
  • Search for Forza Horizon 6 and click the three-dot menu
  • Select Advanced Options, then click Repair first
  • If the error persists, return and click Reset
  • Restart your PC after the process completes and relaunch the game

Fix 4: Clear Microsoft Store Cache

Steps:

  • Press Win + R, type wsreset.exe, and press Enter
  • Wait for the blank window to close and the Microsoft Store to reopen
  • Restart your PC after the cache reset completes
  • Relaunch Forza Horizon 6 and check whether the unexpected error persists

Fix 5: Add Forza Horizon 6 to Windows Security Exclusions

Steps:

  • Open Windows Security and navigate to Virus and Threat Protection Settings
  • Click Add or Remove Exclusions and add the entire Forza Horizon 6 installation folder
  • Also add the Gaming Services directory as a separate exclusion
  • Disable Controlled Folder Access temporarily under Ransomware Protection
  • Restart your PC and relaunch the game

Fix 6: Disable Memory Integrity and Hyper-V

Steps:

core isolation
  • Open Windows Security, go to Device Security, then Core Isolation Details
  • Toggle Memory Integrity to Off
  • Open Command Prompt as Administrator and run: bcdedit /set hypervisorlaunchtype off
  • Press Win + R, type optionalfeatures, and uncheck Hyper-V, Windows Hypervisor Platform, and Virtual Machine Platform
  • Restart your PC after applying all changes

Fix 7: Update GPU Drivers

Steps:

  • Press Win + X and open Device Manager
  • Expand Display Adapters and right-click your dedicated GPU
  • Select Update Driver and install the latest available version
  • Alternatively download the latest driver from NVIDIA, AMD, or Intel’s official site
  • Select Clean Installation and restart your PC after the driver installs

Fix 8: Perform a Clean Reinstall of Forza Horizon 6

If all previous fixes have not resolved the unexpected error, a complete clean reinstall is the most thorough approach to eliminate every corrupted component causing the unhandled failure.

Steps:

  • Open the Xbox App and uninstall Forza Horizon 6 completely
  • Delete any remaining folders from the installation directory manually
  • Press Win + R, type %localappdata%, and remove any Forza Horizon 6 related folders
  • Restart your PC before reinstalling
  • Reinstall Forza Horizon 6 through the Xbox App and run it as Administrator after installation completes

Conclusion

The Forza Horizon 6 Unexpected Error is an unhandled initialization or runtime failure rooted in Gaming Services conflicts, Xbox authentication issues, corrupted files, and system configuration problems. Start with Fix 1 and Fix 2 for the fastest resolution since Xbox session refresh and Gaming Services reinstallation address the most common triggers for this specific error. Work through the remaining fixes systematically if the unexpected error continues. With Gaming Services correctly installed, Xbox authentication refreshed, and Forza Horizon 6 cleanly reinstalled, the game will launch without the unexpected error appearing again.