1. Reduce your display resolution.
Reducing the Windows resolution can help fix this issue because it is possible that your monitor does not support high resolutions or your graphics card is not capable of rendering more pixels per inch (PPI). High resolutions mean more pixels, which result in producing higher quality. When you lower your resolution, the LoL client will launch with fewer pixels per inch (PPI). This will help if your monitor or graphics card is not capable of launching the League Client with a high resolution. To reduce the display resolution, follow these steps:
2. Open the League Client from the directory.
If the League Client is not opening by using the shortcut or the Riot Client, you can try launching it by navigating to its directory. Sometimes, the application gets corrupted, which causes it not to launch. Hence, try launching the League Client from the directory by following the steps.
3. Open League of Legends through the Riot Client.
You can also launch League of Legends through the Riot client, which will open the League client and fix your issue. Since the Riot Client is required for League of Legends, it is necessary that the Riot Client is running properly. Hence, try launching LoL from the Riot Client.
4. Close League of Legends completely, and then launch it as an administrator.
If multiple League Client processes are already running in the background, then the League Client won’t launch because Windows will think that it is already running and functioning. Hence, try closing all processes related to the League Client from the Task Manager. Additionally, after closing the league client processes, we recommend running the league client as an administrator. Running the League client as an administrator will help access the required DLL files and redistributables. It also helps bypass firewall interference, which sometimes blocks the executable files. To do so, follow these steps:
5. Change the League Client and Riot Client Compatibility Settings.
Compatibility settings allow users to run the application with older versions of Windows. They also include various different features, such as disabling full-screen optimizations and running the application as an administrator. Disabling full-screen optimization allows you to bypass Windows’ built-in optimization, which grants applications full control of display and graphics performance. Since applications have their own optimization features, there is no need to use Windows’ built-in optimization, as it can interfere with in-game optimization and result in this issue. When the application refuses to launch, changing the compatibility settings can be one of the best ways to address this issue. To do so, follow these steps:
6. Allow League of Legends through your Windows Firewall.
Windows Firewall is a part of Windows Defender and is used to monitor incoming and outgoing data to prevent unauthorized access. Your Windows Firewall has the ability to block the League client executable file, which can result in this issue. Thus, you need to add the League client to your firewall settings to determine whether the firewall is interfering or not. Follow the instructions to add the League Client to the list of allowed apps in the firewall.
7. Reinstall the Riot Client.
Since League of Legends is developed by Riot Games, it can be launched through the Riot Client, which is a launcher that should be running in the background. If there is a problem with the Riot Client preventing it from initiating, then the League Client won’t open. Hence, try reinstalling the Riot Client to check whether the issue will be fixed or not. To reinstall the Riot Client:”.
8. Reinstall League of Legends.
If the League Client still refuses to launch, the final solution is to reinstall League of Legends. Since we have tried reinstalling the Riot Client, it means the problem must be in the game files, causing the League Client not to launch. To reinstall League Of Legends:
9. Submit a ticket to Riot Games.
If reinstalling LoL has not fixed the issue, in this case, you need to submit a ticket to Riot Games about your issue. The Riot Support team will contact you to resolve this problem. They might ask for League of Legends log files. Therefore, it is recommended to submit log files along with your ticket. To gather log files and submit a ticket, follow these steps:
