How to Fix 0U Error Code in League of Legends

League of Legends Rengar

If you’ve been playing League of Legends for a while, chances are that you’ve come across this error. It can be quite frustrating to deal with as it stops you from playing and forces you to fix it. If you do not know how to fix the error, it can be quite a hassle. Worry not because we will show you how to fix error code 0U in League of Legends.

Since Riot Games has its own client, there is a slew of problems that players have to face. While having their own client is beneficial, it can bring in unique errors as well. With that said, let’s dive right in and take a look at how to fix error Code 0U in League of Legends.

League of Legends: How to Fix 0U Error Code

This error initially started with the PBE version of League of Legends. Streamers would often face this problem and it wouldn’t allow them to launch the game. Unfortunately, it has now spread to the main game as well and it is quite common.

Since no official statement has been given by Riot Games, we can only assume that the PBE issue has carried over to the main game and is spreading widely. Chances are that you or your friends have certainly faced this issue recently. Now that we’ve established what the issue is, let’s discuss how you can fix it.

Use Hextech Repair Tool

How to Fix Error Code 0U in League of Legends

The Hextech Repair Tool is a handy tool that lets you see if there is anything wrong with the client or the game. While it is not the official fix, this is your best bet as confirmed by many players. Until Riot Games releases an official statement or fix, using the Hextech Repair Tool will help you out a lot.

Related: How to Download League of Legends Skin Mods and Install Them

You have to download the tool and run it. Once it is active, it will automatically scan all of the game’s files and look for any technical issues. If it finds any corrupted files, it will patch them and add new ones. While this process can take a bit of time (since League has so many files) it is worth it to wait and let the tool do its job.

This is what the Hextech Repair Tool does:

  • Easy reinstallation or repatch
  • Firewall management
  • Displays known issues in your region
  • And more!

Reinstall League of Legends

If the tool didn’t work for you, the next best thing would be to reinstall the game. I know it isn’t the ideal thing to do but that will return the game to its default state and remove any potential issues. Plus, if you have a fast internet connection, you won’t even know how long it takes to reinstall the game.

Submit a Ticket

How to Fix Error Code 0U in League of Legends

If all else fails, you can always submit a ticket to Riot Support. Go to their website and choose your request type. There are multiple options available so select the one that is relevant to you. Riot is quick to respond to these tickets and they will help you figure this out. Plus, it might bring this error into their eyes if a lot of players submit a ticket about it.


There you have it, that’s how to fix error Code 0U in League of Legends. If you are still facing this issue, let us know in the comments below and we will gladly assist you. However, if you’ve managed to fix it by some other means, we would appreciate it if you could leave a comment and tell us what you did.

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