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The "unable to connect to the authentication service" error in League of Legends typically appears when you're trying to log in. While the simplest solutions to fix this error include updating your firewall settings and changing your DNS configurations, you should first check if the League servers are experiencing downtime.
If League servers are fine and updating firewall or DNS isn't helping, we are here with alternative solutions for you to try out. So simply follow our easy-to-follow solutions to resolve this issue.
What causes the "unable to connect to the authentication service" error in League of Legends?
This error message generally indicates that the game can't properly access your data when you launch it. This could be due to various reasons, such as an unstable internet connection, a malfunctioning firewall, or other unforeseen factors. The error can appear at different stages, like during champion selection, on the login screen, or even midway through a game.
How to solve the "unable to connect to the authentication service" error in League of Legends?
Here are some solutions to the "unable to connect to the authentication service" error in League of Legends:
Disabling Firewall
If you receive the "unable to connect to the authentication service" error in League of Legends again after logging back in, the next step is to troubleshoot and temporarily disable your firewall. Although firewalls usually shouldn't interfere with your connection to League, they can sometimes cause unexpected issues by blocking internet access.
Warning: Disabling your firewall exposes your system to potential security risks, so only keep it off while troubleshooting. Once you find the source of the problem, ensure your firewall is back on and configured correctly to allow safe communication with League of Legends.
Change your DNS settings
Just follow these steps:
- Open Control Panel: Click the Windows Start menu and search for "Control Panel." Select it from the results.
- Go to the Network and Sharing Centre: Click "Network and Internet," then select "Network and Sharing Centre."
- Access Adapter Settings: Click on "Change Adapter Settings" in the left sidebar.
- Select Your Network Connection: Right-click on your network connection (either Ethernet or Wi-Fi), then select "Properties."
- Choose Internet Protocol Version 4 (TCP/IPv4): In the "Properties" window, find "Internet Protocol Version 4 (TCP/IPv4)" and check the box. Click "Properties" to continue.
- Change the DNS server addresses: Select "Use the following DNS server addresses." Now enter Google's public DNS: "8.8.8.8" in the "Preferred DNS server" field and "8.8.4.4" in the "Alternate DNS server" field.
- Confirm Changes: Click "OK" to apply the new DNS settings. Click "Close" to exit the Properties window.
- Restart Your Connection: Disconnect and reconnect to your network, or restart your computer for the changes to take effect.
Use the Hextech Repair tool
The Hextech Repair Tool is Riot Games' official solution designed to address critical League of Legends errors, including the "unable to connect to the authentication service" issue. This tool scans your installation of League and applies patches to fix any detected errors.
That is all the possible solutions for the "unable to connect to the authentication service" error in League of Legends. If you are still unable to access League of Legends and the Riot servers are working fine, then you should contact your ISP or Internet service provider for solutions, as this problem stems from internet connectivity.
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