League of Legends Unexpected Error with the Login Session: How to Fix

League of Legends Unexpected Error with the Login Session fix
League of Legends Unexpected Error with the Login Session fix / Riot Games

The League of Legends Unexpected Error with the Login Session issue is a common inconvenience in Riot Games' acclaimed MOBA. This error prevents players from logging into their Riot Account and playing League of Legends online. Fortunately, there is a rather simple fix for the issue.

League of Legends Unexpected Error with the Login Session: How to Fix

The League of Legends Unexpected Error with the Login Session issue can be solved in just three easy steps:

  1. Press Alt + F4 on the League of Legends client and click "sign out"
  2. Close all instances of RiotClientServices.exe and LeagueofLegends.exe in Task Manager
  3. Reopen League of Legends

The first step is to hold Alt + F4 while clicking on the League of Legends client and sign out. You must make sure to click "sign out" and not "exit" when performing this step.

The second step is to open the Task Manager by pressing either Ctrl + Shift + Esc or Ctrl + Alt + Delete. Once in Task Manager, close all instances of RiotClientServices.exe and LeagueofLegends.exe. To do this select each instance of the programs and click the "End task" button.

The final step is to reopen the League of Legends or Riot Games! client and try logging in again. If the error continues, repeat these steps and be sure to close the program KillerServiceNetwork.exe in Task Manager. This program might be limiting the use of your bandwidth for League of Legends and causing you to disconnect.