9 Ways to Fix League Client Won’t Open Error [Updated]

League of Legends (LOL) is a multiplayer online battle arena video game developed and published by Riot Games for Microsoft Windows and Mac OS. It is a hugely popular online game, and by the end of 2016, it had over 100 million active players every month. Thus, you must know how to fix the League Client Won’t Open error.

Moba Games

Since its initial release way back in 2009, the game has been continuously plagued by recurring issues with the client. Riot Games has been releasing patches for it continuously. But still, with every new update, the client might fail to work for you. The issue is persistent for both PC users as well as Mac. If you, too, are a fan of League of Legends and you find that the League Client won’t open one sunny day, do not worry. It’s likely to be a simple issue, and one of the below-mentioned steps should hopefully fix your problem.

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How to Fix League Client Won’t Open

The following are some of the ways to fix league client won’t open error.


Even after installing it repeatedly, League Client doesn’t work; then, you can make an effort of directly operating it from the Installation directory. To approach it, follow these steps thoroughly:

  • Look for a file on your PC with the name “C:\Riot Games\ League of Legends.” This must be present in the menu called “File Explorer.”
  • Search for file League Client.exe, and to examine whether it is opening, try double-clicking.
Installation Directory
Installation Directory
  • If it doesn’t open, you can right-click on that file and directly select an alternative on your screen called “Run as Administrator.”
  • If it begins without any problem, it signifies that the shortcut document is contaminated, and you need to generate another shortcut.

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Many times, users find it difficult to operate the league client due to background running apps. These applications can disable your machine to perform the crucial function. Follow these instructions to stabilize this issue:

  • Look for a menu called “Task Manager” on your PC and click on it to run.
  • Select the option ” Processes tab,” and now, choose a file on your screen with the name “League of Legends(32 bit)”.
Task Manager
Task Manager
  • Once you make this selection of “League of Legends,” you are unrestricted to select “End Task” to halt the functioning and prevent the background working of League Client.
  • Try opening it again with LOL and check if it’s working now.

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Sometimes, you may find it problematic to unlock this record even after fixing all the bugs. Yet, there are many explanations for this issue, but the primary reason could be the existence of corrupted files. These files occur during the establishment procedure. However, you can effortlessly rectify this problem and update it. Follow this procedure :

  • Run a document directly on your PC with the name “Installation Directory.”
  • Once this is done, you can switch to RADS> Projects.
  • Now search for another document with the name of “solutions.” Two files must be present there related to League Client.
  • Once you find both of them, right-click and select the ” Delete” option to permanently eradicate these files from your device. This will eliminate both of them from your machine.
  • Now, try installing League Client again to hasten up the”update” process.

Solution #4

Before beginning, you need to make sure that you have got the essentials right. First of all, see that your antivirus isn’t blocking the League Client from opening. If that is the case, disable your antivirus or turn on silent mode or gaming mode if there is any such option.

Windows Defender Firewall
Windows Defender Firewall

Secondly, make sure that you are running the game with Administrator privileges. It is especially crucial when you have multiple users using the system. The League Client will only work with the Administrator privileges turned on.

Thirdly, the new League Client won’t open if any Firewall is blocking its execution. Make sure that Windows Firewall or any third-party Firewall isn’t blocking the Client from opening. If this is the case, open your firewall, go to “Manage Exceptions,” and add “LeagueClient.exe” to the exceptions list.

See also: How To Permanently Disable Windows Defender on Windows 10

Solution #5

If you have recently updated your League of Legends client, and the league won’t launch. It is possible that something got damaged in the new client files, and the League Client did not repair those files. Try these steps to fix it:

  • Open your League of Legends installation folder.
  • Proceed to C:\Riot Games\League of Legends\RADS\system.
  • Locate the user.cfg file.
  • Right, Click and select Open in Notepad.
  • Make the following changes: leagueClientOptIn = yes to leagueClientOptIn = no
  • Save it and relaunch League Client.
repair files
repair files
  • Once it opens, go back to the LOL folder and delete the “LeagueClient.exe” file.
  • Now go back to the league launcher and click the accept beta opt-in.

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Solution #6

If your league won’t open and you have tried reinstalling LOL repeatedly, but still the League Client won’t open, the error might be with the old registry files. It would help if you cleared the old registry entries for your new client to work. To do this, try the following:

  • If you are on Windows 8 or higher, go to search and type “regedit.”
  • Go to the Edit tab and click on Find.
  • In the search bar, type “League” and hit Enter.
  • You will see a couple of entries show up in the right-hand column.
  • Right-click each one and delete all of them.
Registery Editor

After you are done, close the registry editor, and perform a Reboot to fix the league that won’t open. Then install the client again and see if that helps. If you had previously installed the beta version of the client, it is advisable not to go with it again. Instead, try installing the stable version.

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Solution #7

If the League Client doesn’t open on macOS, you could try the following and see if that helps:

  • Open Finder>applications>LoL.
  • Right-click on ‘League of Legends‘ and click ‘show package contents.’
show package contents in league of legends
show package contents in a league of legends
  • Delete the file named ‘logfile.’
  • Launch the League Client by clicking ‘LeagueClient‘ in the same folder as the file you just deleted.

On a PC, the steps are almost similar to fix League Client Won’t Open error.

  • Locate riot games folder (C:\Riot Games\League of Legends)
  • Locate the file “LeagueClient” and delete it.
  • In the same folder, you will find “lol.launcher.
  • Click on it and hit the Launch button.
  • The Client should open and update automatically.

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Solution #8

If the new League Client doesn’t open, you could try going back to the old one. Proceed with the following steps:

  • Find the location C:\Riot Games\League of Legends\RADS.
Location of League of Legends
Location of League of Legends
  • Navigate to the following Projects>League_Client>Releases>>Deploy.
  • The next window will contain a lot of files. Scroll down to “LeagueClient.exe” and open it.
  • And just like that, it will fix. Lol, the client won’t open and will automatically take you to the login screen and update the old icon.

Solution #9

If the beta version of the League Client won’t open and you get a black screen, you can fix it with a small trick. Before trying this, add the “LeagueClient.exe” shortcut to the desktop. To do this, go to the LOL installation folder and proceed to the “Client.exe” file to fix the league of legends that won’t launch the issue. Right-click on it and select “Create Desktop Shortcut.” Once done,

  • Right-click the League Client desktop shortcut.
  • Go to properties.
  • On the target tab, you could see a string of characters.
  • Add the “-no-sandbox” parameter at the end of the line.
  • The new parameter should look something like this “C:\Riot Games\League of Legends\LeagueClient.exe” -no-sandbox.
  • Click Apply and then OK.

See also: 16 Ways to Fix Steam Won’t Open Error in Windows


Hopefully, the above steps should fix League Client Won’t Open an issue and get it back started again. We hope this article solved all your doubts and helped you understand optimizing windows for gaming purposes. Revisit us for more articles!

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