DLL files are like the behind-the-scenes crew of a game, working to make sure everything runs without a hitch on your computer. If the Rocket League app is having trouble starting, it might be due to a snag with these files.
Troubleshooting and Fixing DLL Related App Errors on Rocket League Game

Try these solutions, they might help you ditch those Rocket League error codes thrown by DLL glitches on your Windows PC in no time.
1. Reinstall Microsoft Visual C++ Redistributable
Reinstalling Microsoft Visual C++ Redistributable is often a solid move. This package contains essential DLL files that games like Rocket League need to run. You can find the installer on the official Microsoft website. After installation, a system reboot can help ensure all the new files are in place and ready to go.
2. Remove DLL Files
Sometimes, specific DLL files create conflicts that prevent games from launching. If you suspect a particular DLL file is the troublemaker, removing it could get things back on track.
For Rocket League, a common culprit is the ‘d3d9.dll’ file. You can find this file in the folder where Rocket League is installed.
Deleting it might sound drastic, but if the file is the source of the conflict, the next time you start the game, it will create a fresh, conflict-free version of the file. Just make sure to back up the original file before deleting it, just in case you need to restore it.
How to Troubleshoot and Fix Fatal Application Errors on Rocket League App

Sometimes, Rocket League might crash or refuse to start because it’s not getting along with the current version of Windows.
1. Run Rocket League Game in Compatibility Mode
In such cases, running the game in compatibility mode for an older version of Windows can help.
You can change this setting by right-clicking on the game’s executable file.
- Select ‘Properties.’
- Click on the ‘Compatibility’ tab.
- Choose an older version of Windows from the dropdown menu.
2. Modify your Antivirus Setting
Antivirus software is meant to protect your system, but it can be a bit overzealous at times, mistakenly seeing a game as a threat. To keep this from happening with Rocket League, you can tell your antivirus to ignore it.
This is usually done within the antivirus program’s settings, where you can add exceptions or exclusions for certain files or folders.
3. Close Unnecessary Running Background Applications
Background applications can eat up system resources or interfere with your games. If Rocket League is having trouble starting, try closing other programs that are running. This includes web browsers, email clients, or any other non-essential applications.
With fewer programs vying for your computer’s attention, Rocket League may have a better chance of launching successfully.
4. Resolving Game File Corruption
Corrupted game files can be a silent culprit behind many game issues. They might prevent Rocket League from launching or cause unexpected crashes during gameplay.
5. Verify Integrity of Game Files
One way to address this is by using the Epic Games Launcher’s built-in tool to verify the integrity of the game files. This tool scans all the game files and repairs any that are found to be corrupted or missing.
It’s a bit like a doctor checking for any issues and then prescribing the right medicine.
6. Reinstall Rocket League Game on a Different Hard Drive
If verifying the game files doesn’t do the trick, the problem might lie with your hard drive. Hard drives can develop bad sectors over time, which can corrupt files stored in those sectors.
A simple solution is to reinstall Rocket League on a different hard drive or partition. This ensures that the game files are stored in a fresh, uncorrupted space. Once reinstalled, you can check if the game launches without any hitches.