How do i fix the error code 1b in League of Legends?

Alton Alexander
By Alton AlexanderUpdated on June 3rd, 2022

There is no definitive answer to this question as the error code could be caused by a number of different things. However, some possible causes could include an issue with the game files, an issue with the graphics drivers, or even a problem with the computer's hardware. Regardless of the cause, the error code typically indicates that the game is unable to start and is unable to continue running. As a result, players will be unable to play the game and may be forced to exit back to the desktop.

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1. Update your graphics drivers

  1. Open your computer's device manager.
  2. Under the Display tab, right-click your graphics card and selectUpdate Driver.
  3. If you are using an older version of the graphics driver, the Update Driver wizard will appear. Follow the on-screen instructions to install the latest graphics driver.
  4. If you are using a recent version of the graphics driver, the wizard will search for the latest graphics driver for your computer and install it.
  5. After the graphics driver is installed, reboot your computer.
  6. If the problem is still occurring, try installing the graphics driver from the manufacturer's website.

2. Reinstall League of Legends

  1. Close League of Legends altogether if it is open
  2. Delete your "leagueoflegends" folder inside "C:\Program Files (x86)\Riot Games\League of Legends"
  3. Download and install the latest League of Legends client
  4. Restart your computer
  5. Copy the "leagueoflegends" folder that you previously deleted back into "C:\Program Files (x86)\Riot Games\League of Legends"
  6. Launch League of Legends and accept the EULA
  7. Click the "help" button in the top left corner of the client and select "reinstall League of Legends"
  8. Follow the on-screen instructions

If the answers above didn't work then you should also try:

  1. Restart your computer.
  2. Update your operating system.
  3. Run League of Legends as an administrator.
  4. Disable your antivirus software.
  5. Temporarily disable your firewall.
  6. Verify your League of Legends files.
  7. Change your game resolution.
  8. Change your game settings.