League of Legends is light enough to run on today’s oldest gaming machines. This allows the game to reach millions of players, but it also means it has its fair share of errors.
Although almost all new patches fix some known bugs, they also tend to introduce others. Troubleshooting all of them may seem like a long and arduous task, but it’s not as bad as you might think.
Although it may seem simple, we recommend that you restart your PC and close all running processes before trying any of the solutions listed below.
Here are some of the most common errors in League and how to fix them.
| Error name | Symptoms | Solution |
| Error code 0U | Usually appears on the PBE client. Error code 0U causes client assets to display incorrectly and even shut down unexpectedly. | Run the Hextech repair tool and try to launch the game afterwards. If that doesn’t work, try adding League as a firewall exception and repatch the game. As a last resort, you can try reinstalling League via the Hextech repair tool. |
| League of Legends Error code 004 | The error usually occurs when the client fails to patch the game. | Failure to download or install an update means there was a connection problem or there was not enough disk space. Make sure your connection is strong and you have enough space on your SSD or hard drive. |
| Error 7 | This error indicates that Riot’s servers are overloaded, causing players to be disconnected. | Since this one is a server-related problem, your best bet is to keep trying to connect. Keep an eye on LeagueThe Twitter account is also beneficial. |
| league of legends Error 1B | Error 1B is usually related to ISP issues. This prevents players from logging into the game. | Although the problem is known to resolve itself, you can try running the League client in administrative mode. If that doesn’t work, we recommend that you repair your client. |
| Under maintenance error | This error mainly affects Linux users and prevents the League customer to receive updates. | Customer Repair should resolve this issue. If that’s not enough, we recommend removing RiotClientServices.old and ucrtbase.dll before trying again. |
| Unexpected error with login session | This login session error tends to occur when another instance of the League the client remains stuck in the background. | To fix the error, launch the task manager and complete all the tasks related to League. If this does not fix the error, we recommend running a customer repair. |
| Error: 0xc0000005 | Although the reason for the error is unknown, it prevents players from logging into the game by blocking their access to the client. | The error is a Windows problem. Try running the League client in administrator mode. If that doesn’t fix the problems, reinstall League after deleting all game related files. |
| A critical error has occurred | This critical error is caused by other programs that provide overlay options when playing games. It prevents players from connecting to League. | Close any programs that have an overlay, such as Steam, Origin, or Discord. After, locate your local League folder to delete configuration and data folders. |
| Unexpected connection error | This error usually appears when you have an unstable connection. It prevents players from downloading updates or logging into the game. | We recommend performing a router reset and changing your DNS. If that doesn’t work, try contacting your ISP and let them know about your problem. |
| Forward error x unknown | This direct x error appears during graphical instabilities and prevents players from launching the League customer. | Although the error message prompts gamers to update their graphics drivers, deleting the game.cfg file should resolve the issue. |
| League of Legends Error code 002 | Just like error code 004, this error also disrupts the update process and makes it impossible to connect to the game. | This is another storage related error. Make sure you have enough space on your data drivers. If that doesn’t seem like a problem, try disabling your antivirus. |
| The program can’t start because d3dx9_43.dll is missing from your computer. | This error mostly occurs on newer PCs and prevents players from starting a match. | Complete all available Windows updates before launch League usually solves the problem. If that doesn’t work, we recommend manually installing the file via the DirectX End-User Runtime web installer. |
How to Fix BugSplat and Generic League of Legends accidents
It’s annoying to get kicked out of a game by a BugSplat crash. But you can find some comfort in knowing that you are part of Leaguedevelopment. Be sure to report these crashes through the popup and help get it fixed.
Most BugSplats and Generics League unnamed crashes occur due to overheating, corrupt game files, hardware issues, or outdated drivers.
Update your graphics card drivers
Outdated drivers are one of the main causes of unknown crashes. New patches may also introduce undocumented changes that change the way League interacts with your GPU. These changes may require a driver update if they are heavily dependent on an upgrade by GPU manufacturers.
Updating your graphics drivers should only take five to ten minutes, as NVIDIA and AMD guide users through the process. Keep in mind that you need to download the correct version for your GPU by browsing through the listings.
Disable your antivirus
Antivirus software has a habit of detecting false positives in Leagueinstall or update files that prevent the client from launching. The main reason behind this is that most of the files are installed on your PC in a compressed format which makes them harder to scan.
Disable or at least set an exception for League’s should allow you to work around any errors you encounter while trying to update your game.
To run LeagueClient and the executable file of the game in administrative mode
Limited user rights or programs with administrator privileges may cause League.
running both the League client and the game’s executable file will ensure that the game reaches all the resources it needs to run properly.
Riot has a habit of uploading new versions of these two files with every patch, so you may need to repeat this process every time a new patch hits the servers.
Repair your client and use the Hextech Repair Tool
Repairing your customer ensures that there is nothing wrong with your League files. It also repairs corrupted files it encounters and downloads missing files.
Although the client repair tool can do the job, the Hextech repair tool will come in handy if you encounter errors and bugs frequently.
The Hextech Repair Tool can:
- Perform easy reinstalls or patches
- Manage the firewall
- Shows known issues in your region
- Keep logs of your crashes
These logs can be used by the League support team to identify the source of your errors.
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