Try this solution and also download the latest version of client from our homepage.
This Happens When I Open Client Please Help TO!
Check your internet connection, try restarting your router.
my internet connection is ok and i reinstal client of tankionline many time but this issu is still. i dont play game last 3 days for this error. please help me.
Follow the procedure below.
Сервис поддержки клиентов работает на платформе UserEcho