How to Fix Unexpected Login Session Error in League of Legends

The League of Legends Unexpected Error with Login Session can show up at the worst of times and, and it can block your planned sessions of Multiplayer Online Battle Arena (MOBA) games. But can it be fixed or will it keep ruining your sessions? I'm going to do my best to give you guys and gals an answer.

This article includes everything I know about the League of Legends Unexpected Login Session Error and whether or not it can be fixed or if there's some other way to get around the problem.

What exactly is the League of Legends Unexpected Error with Login Session?

The League of Legends There Was An Unexpected Error with Login Session full error message says: "There was an unexpected error with the login session. Please try again." Doesn't sound very helpful, huh? And multiple login attempts don't seem to do anything to fix the problem either. However, there is a quick fix that has proven to remove of the League of Legends Unexpected Login Session Error for several players. The solution requires the following:

  1. Open your LoL client as you would normally, then log in.
  2. If you look carefully you'll see that there's a small window in which you could close the game before the login error message is displayed
  3. Quickly press the X button that normally closes the client. You will get the choice of exiting or signing out.
  4. Choose Sign out. Then the client will restart and logging in should work. In theory at least.

Other solutions

League of Legends' developer, Riot Games, came out with their own solution to the problem. The team posted the following fix to the Unexpected Login Session Error on their support site:

"Press Alt+F4  on the client and click "sign out" not "exit".

Press Ctrl + Shift + Esc to open Task Manager and close all instances of RiotClientServices.exe and all instances of LeagueofLegends.exe

Reopen the League of Legends (or Riot Games!) Client and log in again.

If you are still experiencing some issues, repeat these steps and also close the program 'KillerServiceNetwork.exe' as this program might be prioritizing bandwidth to your online streams and reducing the bandwidth for League of Legends, causing you to disconnect."

Doing the above steps should make any unwanted League of Legends Unexpected Login Session Error disappear, leaving you to the MOBA gameplay that you and millions of other gamers around the world love so much.

March 23, 2020


  • Kaiky:

    o meu continua dando erro, mas o problema é que ele já está logado, entao nao abre o cliente para fazer o login, abre o cliente do jogo direto, então eu nao consigo nem mesmo fechar e abrir de novo

  • Girardot:

    Je ne comprends pas ce qui se passe mais a chaque partie que je fais en fin de partie le launcher lol m'indique qu'il faut le redémarrer car ma session est invalide. J'ai essayer les tips donnés sur ce topic mais rien n'y fait je rencontre toujours le même problème. Pouvez vous m'aidez s'il vous plait ?

  • Tim:

    Yup same as me. tried the fix but still getting error message. Exit is the only option

  • yazdan113377:

    I did all of the above steps but I have problem again.
    unexpected Error

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