Hello. This is Kalonline. After Regular Maintenance, it has been confirmed that there are players who cannot connect to the server because the client version does not match. If the client version does not match, you must randomly update according to the method below. [Right click on Kalonline icon]-[Properties] [File location] [Run engine] If you run the [engine] program, you can get the client update file. If you run Kalonline after running the [engine] program, you can connect to the server. If the client update is not resolved by the method described above, please use Kalonline after completely deleting and reinstalling it. [Control Panel]-[Programs and Features] [Right click on Kalonline] [Uninstall] We apologize for any inconvenience caused by the game, and we will do our best to provide better service. Thank you.