League of Legends (abbreviated as LoL), the spiritual sequel to Defense of the Ancients (DotA), has become one of the most popular MOBA (Multiplayer Online Battle Arena) game since its release in 2009. The game continues to attract new eyes and enjoys a large following on streaming platforms like YouTube and Twitch. League of Legends is also one of the biggest eSports out there. The freemium game is available on Windows as well as macOS and a beta mobile version, League of Legends: Wild Rift, was launched in 2020. The players (each player is called a champion and has special abilities) battle in a team of 5, with the ultimate goal of destroying the opposing team’s Nexus which is located at the center of their base. 

However, the game, like others, isn’t entirely perfect and users encounter an issue or two every now and then. Some of the most frequently experienced errors are failing to patch the game (error code 004), Unexpected Login Error due to poor internet, A critical error has occurred, etc. Another very common error is the League of Legends client application not opening up. For some users, a small pop-up arises when they double-click on the LoL shortcut icon but the game fails to launch, while for others double-clicking does absolutely nothing. There are a number of reasons why the client may refuse to launch. Some being Windows firewall/antivirus program is preventing LoL client from launching, an open instance of the application in the background, outdated or corrupt drivers, missing game files, etc. 

In this article, we will be discussing the said issue and detailing eight different ways users can implement to fix League Of Legends client not opening issues. 

8 Ways To Fix League Of Legends Client Not Opening

) or disable the security programs before running the game. If these quick solutions failed in resolving the issue, start implementing the below solutions one after the other. 

Method 1: Terminate all active League of Legends Processes

The LoL client (or any other application for that matter) may not be able to launch if an instance of the application is already running/active in the background. This might happen if the previous instance failed to shut down correctly. So before moving onto anything advanced, check the Task Manager for any ongoing LoL processes, stop them, and then try launching the client program.

keys simultaneously.

at the bottom-left corner to have a look at all background processes and their system resource usage.


after you have terminated all of them. Try launching the game once your PC boots back on. 

Method 2: Launch the Game from the directory


(or press Windows key + E) shortcut icon to open the same. 

2. While installing League of Legends if the installation path was kept as default, head down to the following address:

Note: If a custom installation path was set, locate the Riot Games folder and open the League Of Legends sub-folder in it. 

on it to run. If that doesn’t successfully launch the game, right-click on the .exe file, and from the ensuing context menu, select Run As Administrator.

in the User Account Control permission pop-up that arrives.

Method 3: Modify User.cfg file

Configuration information and settings of every program are saved in their respective .cfg file which can be modified in case frequent errors are being encountered. The majority of users have reported that editing LoL client’s user.cfg file helped them resolve opening issues and hopefully, it will fix the issue for you too. 

in the File Explorer.

sub-folder in it. 

You can also manually look for the same. 

. Close the Notepad window. 

7. Try to launch the League of Legends client now. Once it opens up, delete the LeagueClient.exe file present at:

8. Finally, double-click on either lol.launcher.exe or lol.launcher.admin.exe to launch the League Of Legends game.

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Method 4: Move the Installation folder

Some users have suggested that simply moving the game folder to another directory or location helped them get ahead of the opening issues. 

from the ensuing context menu. 


3. Open another directory and create a new folder named League of Legends. Paste (Ctrl + V) all the game files and folders in this new folder. 

4. Right-click on the LoL executable file and select Send to > Desktop

Method 5: Force League of Legends to Update itself

The League of Legends developers constantly rolls out game updates to introduce new features and fix any bugs in the previous version. It is quite possible that the LoL version you have currently installed/updated to isn’t entirely stable. An improper installation can also lead to multiple issues. The only way to resolve an inherent bug or corrupt game files is to either roll back to a previous bug-free version or install the latest patch. 

1. Open the File Explorer once again and head down C:\Riot Games\League of Legends\Rads\Projects.


key on your keyboard now. 


5. Restart the computer and launch League of Legends. The game will automatically update itself. 

Method 6: Repair the Game 

The League of Legends client application has a built-in feature to automatically check for any corrupted or missing game files and repair them. If you are fortunate enough, this might just do the trick and let you get back to the game.

1. Head down the game installation folder (C:\Riot Games\League of Legends) and run the lol.launcher.admin executable file (or open the lol.launcher.exe as administrator). 


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Method 7: Update Drivers

to get notified whenever a new set of drivers are available and update all drivers by the click of a button. 


from the options menu.


4. On the following screen, choose Search automatically for drivers.

Method 8: Reinstall League of Legends 

. They will help ensure that no residual files are being left behind and the registry is cleaned of all entries associated with the application. 



3. Follow the on-screen instructions to uninstall League of Legends and then restart your computer. 

and download the installation file for the game. Reinstall the game by following the on-screen instructions.


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