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FIX: Forza Horizon 4’s This app can’t open error

5 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Key notes

Forza Horizon 4 is among the best racing games for Windows. However, some players have posted in forums about aThisappcan’t openerrorthey need to fix forForza Horizon 4. That racing game doesn’t start up when theThisappcan’t openerror arises.

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 4Thisappcan’t openerror, try reinstalling thegameas 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 softwarewill 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 Windowsapps, so be sure to try it if you’re havingForza Horizon 4 thisappcan’t openerror.

3. Reset Forza Horizon 4

4. Clear the MS Store Cache

Your cache can be the cause forForza Horizon 4 thisappcan’t openso be sure to clear it and check if that helps.

5. Turn off the firewall

6. Temporarily disable antivirus software

Users with third-partyantivirus softwareinstalled should disable them via their context menus. Right-click yourantivirusutility’s system trayiconand select its disable option to temporarily turn off the shield. Thereafter, try playing Forza 4 with yourantivirus softwareturned off.

Once yourantivirusis turned off, check ifForza Horizon 4 thisappcan’t openerror is still there.

Note:Forza’s support team has confirmed the Avast, Avira, Sophos, Comodo, Trend Micro Maximum Security, Bitdefender Firewall, and Sophosantiviruspackages stop F4 from launching. So, make sure you disable, or even uninstall, those third-partyantivirusutilities.

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 BankingApp, 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 theThisappcan’t openerror for Forza Horizon 4. Note that some of the above resolutions might also fix the sameappcan’t openissue for othergamesand software. Some fixes in ourWindows 10 apps won’t open guidemight also help resolve this issue.

FIX: Forza Horizon 4’s This app can’t open error#

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

1. Reinstall the app#

2. Troubleshoot MS Store apps#

3. Reset Forza Horizon 4#

4. Clear the MS Store Cache#

5. Turn off the firewall#

6. Temporarily disable antivirus software#

7. Disable ReadyBoost and disconnect all unneeded USB device#

8. Clean boot Windows#