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1. Users who directly upgrade the external version with the internal testing client.

2. After the file-not-deleted test, the internal testing client was not uninstalled, and the users of the cover installation directly connected to the client in the file-not-deleted stage.

Please try the following solutions:

1. Uninstall the "League of Legends" client on the computer, and download and install the latest version of the complete client on the download page in official website.

2. Download the manual update package of V3.0.0.3 on the official website download page, install the manual update package, and then use the shortcut generated by the computer desktop to enter the game.

3. Delete the shortcut of League of Legends on the desktop. Find the desktop shortcut generated by League of Legends TCLSClient.exe application in the installation path of League of Legends on your computer, and use this shortcut to enter the game.