The lu003 error code is a generic input/output error code. This means that there is a problem with the way the computer is trying to communicate with a peripheral device, such as a printer or scanner. There can be several reasons why this error code occurs, including a loose connection, a faulty cable, or a problem with the driver.
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1. Restart your computer
- Boot your computer into Safe Mode with Networking
- Click on "Start" and select "Restart"
- Press "F8" multiple times until you see the "Advanced Boot Options" screen
- On the "Advanced Boot Options" screen, choose "Safe Mode with Networking"
- Click on "Restart"
- Your computer will restart and will now be in Safe Mode with Networking
- Click on "Start" and select "Windows Update"
- Click on "Check for Updates"
- If there are any updates, click on "Update Now"
- Once the updates are installed, click on "Finish"
- Restart your computer
- When your computer starts up, log on
- If you are prompted for a password, enter your password
- Click on the "Start" button and select "All Programs"
- Click on "Accessories"
- Click on "System Tools"
- Click on "Restart"
- When your computer restarts, you will now be in the Windows Boot Manager
- Click on "Windows"
- Click on "Restart"
- Once your computer restarts, you will now be in the Windows desktop
2. Update your graphics driver
- Open Device Manager by right-clicking on My Computer and clicking on Device Manager.
- In Device Manager, locate and click on the graphics device you want to update.
- Click on the Driver tab.
- Select the Update Driver button.
- Browse to the location of the updated graphics driver file and select it.
- Click on the OK button.
- Restart your computer.
3. Reinstall League of Legends
- Close League of Legends if it is open.
- Uninstall League of Legends.
- Install League of Legends again.
- Verify your game cache.
- Restart your computer.
- Verify your game cache once more.
- Enter your login information for League of Legends.
- Click the "Play" button.
- If you are still experiencing lu003d error 01, please contact customer support.
4. Run League of Legends as an administrator
- Open League of Legends.
- Click on the "Administration" tab at the top of the window.
- Select "Lu003d" from the "LOBBY" dropdown.
- Click on "Lu003d" in the "LOBBY" list.
- Select "Settings" from the menu on the left.
- Click on "Lu003d" in the "LOBBY" list.
- Under "Settings" click on "General".
- Under "General" click on "Connection Settings".
- Click on "Account Settings" in the "Connection Settings" list.
- Click on "Enabled" in the "Account Settings" list.
- Click on "OK" in the "Account Settings" window.
- Click on "Lu003d" in the "LOBBY" list.
- Select "Configure" from the menu on the left.
- Click on "Lu003d" in the "LOBBY" list.
- Under "Configure" click on "Settings".
- Click on "Enabled" in the "Settings" list.
- Click on "OK" in the "Settings" window.
- Click on "Lu003d" in the "LOBBY" list.
- Select "Close" from the menu on the left.
5. Delete the "Config" folder in your League of Legends installation directory
- Open League of Legends and go to the main menu.
- Select "Options."
- Select "Game Settings."
- Under "General," select the "Config" folder.
- Select "Delete."
If you didn't find success with an option above, then try:
- Verify your League of Legends installation files
- Temporarily disable your antivirus software