Knowledge Base/League of Legends Player Support/Technical Support

Reinstalling League of Legends

posted this on August 09, 2010 17:02

Last updated: 5/29/2012

Re-downloading and reinstalling League of Legends from the latest setup file may solve a variety of technical issues with the game. New versions of the setup files are uploaded after every patch, so reinstalling the game from these files will result in a fully updated version of the game. Reinstalling from the most recent version of the setup files ensures that any problems you experience with League of Legends are not caused by out-of-date or corrupted files.

1. Uninstalling League of Legends

  • Open the Start Menu.
  • From here, open Control Panel.
  • Select "Add or Remove Programs."
  • Select "League of Legends" from the list. 
  • Select "Uninstall/Remove."

If you run into problems uninstalling League of Legends, this is usually indicates a larger problem with your Windows registry. It may be a good idea to run a registry cleaner likeCCleaner, or contact your computer's manufacturer.

2. Confirm that no League of Legends files have been left on your hard drive.

  • Navigate to the directory where League of Legends was installed (the root C:\ drive by default) and delete any remaining Riot Games folders.
  • Delete the folder that contains the old setup files you used to install the game. This folder is named League of Legends and placed on your desktop by default. (Note: this may not apply to you if you did not install the game recently.) It is also very important that you uninstall Pando Media Booster after deleting the older setup files.  

    To uninstall Pando Media Booster
    • Open the Start Menu.
    • Open the Control Panel.
    • Open "Add or Remove Programs." 
    • Select "Pando Media Booster."
    • Select "Uninstall/Remove" and follow the uninstall procedures.
  • Delete any instances of LeagueofLegends.exe from your computer. (Note: this may not apply if you did not install the game recently).

3. Uninstalling Adobe Air

  • Open the Start Menu.
  • Open the Control Panel.
  • Open "Add or Remove Programs." 
  • Select "Adobe Air" from the list of installed programs.
  • Select "Remove."
  • Restart your computer.

4. Reinstalling League of Legends and Adobe Air

If you have experienced problems reinstalling the game in the past; you may want to consider running a registry cleaner before reinstalling the game. CCleaner is a common registry cleaner that many players have found useful. You may also want to try creating a new Windows administrative account in the Control Panel to install the game.

  • Download the latest version of League of Legends from
  • Run LeagueofLegends.exe to download updated versions of our setup files. The setup files will be placed in a new League of Legends folder on your desktop by default.
  • When the setup files finish downloading, the installation process will begin automatically. If possible, install League of Legends to the default root C:\ drive. Do not install League of Legends to Program Files, or any Windows user account specific folders, like “My Documents.” (Note: If you need to restart the installation process at any time, you can do so by running setup.exe in the League of Legends folder on your desktop.)
  • When the installation process finishes, the game's launcher will open automatically. If you need to open the game manually, please do so by double clicking the League of Legends desktop shortcut, or by running lol.launcher.exe in the C:\Riot Games\League of Legends directory.
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