While playing a game my internet connection froze so i had to exit out of the game and reconnect but when I tried to reconnect again after a minute or so it would say could not reconnect make sure your firewall is not blocking this program. So I turned off my firewall but that didn't help then tried to restart but that didn't work either. Any help regarding this issue would be appreciated.

Same, I have no idea what to do :|

I'm having the same problem but I would not even make it to the champion selection screen. Almost as if the game froze or something wrong with the server. I try to join another game but tells me I'm already in one. So I close the client and log back in, click reconnect and nothing happens, just sits there with a greyed out reconnect box.