How can I fix the This app can’t open error for Forza Horizon 4?

1. Reinstall the app

If none of the resolutions below fix Horizon’s 4 This app can’t open error, try reinstalling the game as a last resort. You can uninstall software and leftover files more thoroughly with a third-party uninstaller. As opposed to a regular uninstallation, dedicated uninstaller software will remove all registry entries related to your game. This will allow you to have a clean and error-free reinstallation. Often times leftover files will interfere with the new files or you won’t be able to reinstall the app at all because the installation wizard will wrongfully detect that it is already installed on your PC. From the list of installed apps in your uninstaller UI, select Forza Horizon, and wait for the uninstallation to complete. Then download the installer wizard again, run it and see if the problem persists.

2. Troubleshoot MS Store apps

This is a simple solution, but it can help you if you’re having issues with Windows apps, so be sure to try it if you’re having Forza Horizon 4 this app can’t open error.

3. Reset Forza Horizon 4

4. Clear the MS Store Cache

Your cache can be the cause for Forza Horizon 4 this app can’t open so be sure to clear it and check if that helps. SPONSORED

5. Turn off the firewall

6. Temporarily disable antivirus software

Users with third-party antivirus software installed should disable them via their context menus. Right-click your antivirus utility’s system tray icon and select its disable option to temporarily turn off the shield. Thereafter, try playing Forza 4 with your antivirus software turned off. Once your antivirus is turned off, check if Forza Horizon 4 this app can’t open error is still there. Note: Forza’s support team has confirmed the Avast, Avira, Sophos, Comodo, Trend Micro Maximum Security, Bitdefender Firewall, and Sophos antivirus packages stop F4 from launching. So, make sure you disable, or even uninstall, those third-party antivirus utilities.

7. Disable ReadyBoost and disconnect all unneeded USB device

8. Clean boot Windows

Note: If this resolution fixes the issue, then an incompatible program or service was likely conflicting with Forza Horizon 4. Discord, Xsplit, Logitech G Hub, Sonic Audio, Warsaw Banking App, OBS, EVGA Precision, and MSI Afterburner are among the programs confirmed to conflict with Horizon 4. So, those are some of the more likely ways to fix the This app can’t open error for Forza Horizon 4. Note that some of the above resolutions might also fix the same app can’t open issue for other games and software. Some fixes in our Windows 10 apps won’t open guide might also help resolve this issue.

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