League of Legends: How to Fix 'Unable to Connect to the Authentication Service' Error

Ahri in League of Legends

The ‘unable to connect to the authentication service’ error is quite a common problem for League of Legends users and can be incredibly frustrating.

There could be several reasons as to why this problem may occur such as faulty internet connection, a disrupted firewall or many other issues.

The most notable places for this error to occur is usually in Champion Select, whilst trying to log in or even during a game which is of course the most frustrating.

Here is everything you need to know in order to fix the issue so that you can continue to play the game.


How to Fix Authentication Service Error in League of Legends

An error message on League of Legends.
Credit: Riot

First things first, it could be as simple as checking your server status if you are not known to be someone that struggles with issues regarding your computer or internet connection.

You can check the server status here.

If the servers are up and running and you are not in-game the most recommended fix to anything is as simple as turning your pc off and on.

If it is neither of these then you can try to update and troubleshoot your firewall which loves to block games and the internet. It is uncommon nowadays but if you have an outdated system then it could be a problem.

You can try either disabling or updating 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 turn it off.

The Last solution is often the most common fix, and that is by changing your DNS settings.

In order to do this, you will need to carry out the following:

  • Open Control Panel
  • Head to Network and Sharing Centre
  • Open Change Adapter settings
  • Once you have found that right-click on Network and select Properties.
  • Once there you will need to choose Internet Protocol Version four (TCP/IPv4) option
  • After that open Properties
  • Then you will want to click the following DNS Server Addresses option
  • Change it to (8.8.8.8) and in the second bar below select (8.8.4.4).

This should fix your issue allowing you to get back onto League of Legends and continue to play the game.


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