by Anton

January 31, 2021

League of Legends is a popular online multiplayer video game, Arena of Battle, in which players control a champion with unique abilities to destroy the opponent’s Nexus team. Although this game is quite stable, sometimes problems can occur, which we will discuss today. In this final installment of the series, we look at an unknown DirectX bug that occurred in League of Legends.

Before following the recommended troubleshooting steps for this particular problem, try restarting your computer. This allows you to update the operating system, remove corrupted temporary data and fix most software problems quite effectively.

During the game this error message may appear on the screen:  An unknown DirectX error has occurred and League of Legends cannot be started. Make sure your graphics card uses the latest graphics drivers from the manufacturer. To fix this, follow these steps.

Update driver graphic card

  • One of the most common causes of this error is an outdated or corrupt graphics card driver. If this is the cause of the problem, you will need to purchase an updated driver. Select the Start button at the bottom left of the screen, type in Device Manager and click on it at the top of the results list.
  • Expand the Display Adapters section in Device Manager, right-click on Graphics Card , and select Remove Device .
  • Confirm any dialog box that may prompt you to confirm your selection and complete the process.
  • Find the driver for your video card on the card manufacturer’s website and follow the instructions, which should be on the website. Save the installation file to your computer and run it from there.

Check for an unknown DirectX error.

Full repair of League of Legendscustomers

Sometimes this problem can be caused by corrupted data in the League of Legends client. You can correct the play by performing a complete overhaul.

  • Open League of Legends. Wait for it to check for new game or client updates, then click Run at the top of the launcher.
  • Open the parameters Parameters and stay in the general section under Client and find there the option Start complete repair . Tap it and follow the on-screen instructions.

Check for an unknown DirectX error.

Reinstallation of DirectX

The problem may be caused by a corrupt DirectX installation. In this case, you need to reinstall DirectX.

  • Open the Registry Editor window by typing regedit.
  • Go to the following key in your registry by navigating in the left pane : HKEY_LOCAL_MACHINE/Software/Microsoft/DirectX
  • In the left pane, right-click on DirectX and select Delete . Confirm all pending dialogs and restart the computer immediately.
  • Restart the computer .
  • Go to https://www.microsoft.com/en-us/download/details.aspx?id=35.
  • Download the web installer for DirectX end users
  • Install DirectX by following the instructions on the Microsoft website or by using the DirectX installation wizard. You will need to scroll down to the terms and conditions page and click Continue.
  • Restart the computer

Check for an unknown DirectX error.

Reinstall League of Legends

If the above steps do not solve the problem, you should remove the game from your computer and then reinstall it.

Remove League of Legends

  • Open the start menu .
  • From there, open the settings.
  • Select Request.
  • Select Garena – League of Legends from the list.
  • Select Delete.
  • Restart the computer after the uninstallation process is complete.

Reinstall League of Legends

  • Download LoL client installer
  • Start the installation program and follow the instructions of the installation wizard. This wizard installs a basic checker for LoL.
  • Start League of Legends and the patcher will complete the installation of the game client.
  • Click the Run button at the top of the Patcher screen and the game client will open.
  • The game client will continue to download the rest of the game. You can log in during this time, but you will not be able to start the game until the download is complete.

 

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