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League of Legends Error 003: Fixing It Is Easy

troubleshoot league of legends error 003

If you’re getting League of Legends error 003, this post is for you. This error usually occurs when players launch the game client which then attempts to install the latest patches.

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. Error: 003.

Here’s how you can fix the problem and resume playing your favorite game.

How to Fix League of Legends Error 003

FIX ACTION DESCRIPTION

1

Restart your computer

Yes, this simple action often works wonders. Do close the game client, restart your PC and check if the issue persists. Additionally, you can also restart your network devices and install the latest firmware update on your router.

2

Run the game as Administrator

Make sure that you’re running League of Legends as an administrator.

Here’s how to do that:

  1. Right-click on the game’s icon on your desktop -> go to the Compatibility tab
  2. Check the option Run this program as an administrator
  3. Launch LoL again.

3

Use the Hextech Repair Tool

The Hextech Repair Tool can fix various connection issues, including error 003. You can download it from Riot Games for free.

Install it, run it, follow the on-screen instructions and check if the problem persists. If this is the case, go to the next solution.

4

Delete content from the Releases file

  1. Go to Rads ->Projects ->lol_game_client -> releases
  2. Delete the releases file, not all the files otherwise you risk deleting the entire game. In this manner, you will delete the last patch and your computer will download it again.
  3. Restart the game.

Keep in mind that deleting the content from that file may take a while, depending on what it’s store in there.

5

Check the server status

Check the current status of the League of Legends server that you are trying to connect to. If the server connection is listed as unavailable, the only thing that you can do is wait until the issue has been fixed on Riot Games’ end.

6

Disable your firewall

Sometimes, your firewall may prevent you from connecting to the game’s servers. Disable it and check if error 003 is still there.

If disabling your firewall fixed the problem, add LoL to the exceptions’ list so that you can continue to use your firewall while playing the game.

How to disable Windows Firewall to fix LoL error 003:

  1. Go to Control Panel -> System and Security -> Windows Firewall
  2. Go to Allow an app or feature through Windows Firewall
  3. Select Change Settings -> scroll through the list of programs, and locate LoL -> check the check box next to it
  4. Go to Allow another program -> find LoL on the list -> Add -> click OK.

How to disable Mac Firewall to fix LoL error 003:

  1. Click on the Apple menu button -> go to System Preferences -> View
  2. Go to Security & Privacy -> select the Firewall tab -> Turn off Firewall
  3. Launch the game again and check if the problem persists.

Speaking of security settings, do not not use a VPN or a Proxy when connecting to a League of Legends server. These tools are known for causing many connection issues.

7

Configure your DNS

How to configure your DNS on Windows PCs:

  1. Go to Control Panel -> Network and Internet -> Network and Sharing Center -> Change adapter settings -> go to your active Network Adapter (your active Internet connection)
  2. Right-click on it -> select Properties -> go to Internet Protocol version 4 > select Properties
  3. Under Use the following DNS server address, enter the following DNS numbers: 8.8.8.8 for Preferred DNS server, and 8.8.4.4 for Alternate DNS server
  4. Now, launch Command Prompt as an administrator and this command: ipconfig /flushdns -> hit Enter
  5. Restart your PC and launch the game again.

How to configure your DNS on Mac computers:

  1. Click on the Apple icon -> go to System Preferences -> select Network
  2. Select your active connection -> click on Advanced -> select DNS
  3. Write down your existing settings
  4. Now, type the following: 8.8.8.8 in the first row, and 8.8.4.4 in the second row under DNS servers
  5. Click OK -> Apply and test your game.

There you go, these solutions should help you fix League of Legends error 003. Let us know which one worked for you.

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