Error. Kick reason: Patching failed

In most cases error occurs if some of game files were not downloaded properly. This could be a game world or game files after patching.

This can be resolved by a single reloading the launcher. Launcher will download the missing files and the error should not appear.

If this didn't work for you try repairing the game from Launcher app.

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This will cause manual re-download of all game files.