What Does “unknown player” Mean?

The client getting stuck at <unknown player> is a common bug in League of Legends. It should be resolved once you:

1. Close all Riot Client processes in the Task Manager and reopen the client.
   
   OR

2. Restart your PC using the Restart button explicitly.

If you continue to experience the bug after following these instructions, it most likely means your account is banned. Navigate to the article below for instructions on claiming the warranty.

Claim Warranty for Banned Account