How to Fix “Authentication Service” Error

The “Failed to connect to authentication service” error is a fairly common problem for League of Legends users and can be incredibly frustrating.

There can be several reasons why this issue can occur like faulty internet connection, broken firewall or many other issues.

The most noticeable places where this error occurs are usually in Champion Select, while trying to log in or even during a game, which of course is the most frustrating.

Here’s everything you need to know to fix the problem so you can keep playing the game.

How to Fix Authentication Service Error in League of Legends

Credit: Riot

First, it could be as simple as checking your server status if you’re not known to be someone having issues with your computer or internet connection.

You can check server status here.

If the servers are up and you’re not in the game, the most recommended solution is as simple as turning your computer off and on again.

If it’s neither, you can try updating and troubleshoot your firewall who likes to block games and internet. It’s rare these days, but if you have an outdated system, it could be a problem.

You can either try disable or update your firewall which you can do by opening your Control Panel → System Security once you are there you will need to find Windows Firewall and then disable it.

The last solution is often the most common solution, and it is by change your DNS settings.

To do this, you will need to do the following:

  • Open Control Panel
  • Head to the Network and Sharing Center
  • Open Change adapter settings
  • Once you find that, right click on Network and select Properties.
  • Once there, you will need to choose the Internet Protocol Version four (TCP/IPv4) option
  • After that open Properties
  • Next, you will want to click on the following DNS Server Addresses option
  • Change it to ( and in the second bar below, select (

This should resolve your issue and allow you to return to League of Legends and continue playing.

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