Fix: Unexpected Error With Login Session on League of Legends

Want to know how you can fix the ‘unexpected error with login session’ on League of Legends?

League of Legends is among the most popular video game titles for PC. It is developed by Riot Games and highlights a team-baed competitive game mode for players working as a team to take down the Nexus. 

Being such a popular title, League of Legends needs to be up 24/7 to maintain a good rating with players. 

However, incidents happen, and occasional errors on any platform are simply unavoidable. 

One of the many errors that you might encounter in the game is the ‘unexpected error with login session’. This issue occurs while launching the game and indicates that there are too many users on the platform. 

Given that the game has over 200 million users, this error message is no surprise. 

To help you out, we’ve decided to make a guide for fixing the ‘unexpected error with login session’ on League of Legends. 

Let’s begin!

1. Restart Your Computer. 

Before doing anything on your system, we suggest restarting your computer if you encounter problems with League of Legends. This way, you can ensure that the issue is not caused by temporary errors. 

See the guide below to restart your computer: 

  1. On your computer, access the Start Menu by clicking the Windows icon in the Taskbar
  2. After that, open the Power Options tab. 
  3. Finally, click Restart to reboot your system. 
Restart PC

Once done, go back to League of Legends and check if the problem is solved. 

2. Stop Other Applications. 

Third-party applications could be the culprit for the ‘unexpected error with login session’ on League of Legends. To confirm this, try closing unused applications on your computer and see if the issue still occurs. 

Access the Task Manager by pressing CTRL + SHIFT + ESC on your keyboard and see which applications you are not using. 

3. Repair the Game. 

League of Legends has a built-in repair tool that you can use whenever you run into issues with the game. This scans your storage for corrupted or missing game files and automatically repairs them. 

Here’s what you need to do: 

  1. First, open League of Legends on your computer. 
  2. After that, go to Settings and click on General
  3. Scroll down and look for the Troubleshooting section. 
  4. Click on Initiate Full Repair and follow the prompts. 
Repair LoL

Go back to League of Legends afterward and check if the problem is solved. 

4. Check Your Network Connection. 

An unstable internet connection could also be the reason for the ‘unexpected error with login session’ on League of Legends. To confirm this, run a test using to measure your network’s bandwidth. 

unexpected error with login on league of legends

If the test indicates an issue with your connection, restart your router to re-establish the link with your service provider’s servers. Disconnect your router from the power source and wait for 5 to 10 seconds before reconnecting it. 

unexpected error with login on league of legends

Once done, run another test to check if the problem is solved. If not, contact your provider and ask them to fix the issue. 

5. Reinstall League of Legends. 

If none of the solutions above worked, the last thing you can do is reinstall League of Legends. This way, we can ensure that there are no missing resources on your computer and that the game is installed correctly. 

See the steps below to reinstall League of Legends: 

  1. Access the Control Panel on your computer. 
  2. Next, click on Uninstall a Program and locate League of Legends
  3. Finally, right-click on the game and select Uninstall. Follow the on-screen prompts to delete the game. 
unexpected error with login on league of legends

Once done, go to Riot’s website and download the latest version of the game. 

That sums up our guide on how to fix the ‘unexpected error with login session’ on League of Legends. If you have questions, drop a comment below, and we’ll be ready to help. 

If this guide helped you, please share it. 🙂


  • John Sixto

    John is a staff writer at Saint and comes from a SAP ABAP development background. He has a Bachelors in IT and has been writing since 2018, with over 500 posts published. He loves to build PCs and has a deep curiosity in understanding how different components and configurations work. John spends hundreds of hours at a time, researching and testing the software and apps, before he proceeds to write about it. LinkedIn X (Twitter) Website

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