

Right-click on the game’s icon on your desktop -> go to the Compatibility tab.2 Run the game as Administrator Make sure that you’re running League of Legends as an administrator.

Additionally, you can also restart your network devices and install the latest firmware update on your router. Do close the game client, restart your PC and check if the issue persists. How to Fix League of Legends Error 003 FIX ACTION DESCRIPTION 1 Restart your computer Yes, this simple action often works wonders. Here’s how you can fix the problem and resume playing your favorite game.

If the patcher isn’t able to maintain a stable connection with the Patcher Servers, the following error message appears: Something’s up with our servers and it’s preventing you from patching. This error usually occurs when players launch the game client which then attempts to install the latest patches. If you’re getting League of Legends error 003, this post is for you.
