
Configuration files are unique for each user and if any of the files are not working properly, you might encounter the issue.
The configuration files of LoL are corrupt and needs replacement. Windows Defender/Firewall was also reported to cause issues. There may be antivirus software which blocks several actions performed by the game when downloading the patch and installing it. The game client is broken and needs to be replaced. The installation of the game is corrupt and needs to be repaired. Patching always requires some extra space so it can download the code and then implement it. There is not enough space in your hard drive. The game is missing administrator privileges and the computer doesn’t allow it to patch. What causes the Error Code 004 in League of Legends?Įrror code 004 in League of Legends can occur due to a number of different reasons since it is related to updating/patching the game.