What is the reason for the signature error of steam game?
Network problem, game file is damaged. The reason why the signature of the steam game is wrong is the network problem. You can close the game, then unplug the network cable and reconnect the network. It is also possible that the game file is damaged. In this case, in addition to uninstalling and reloading the game, you can also use the verification integrity function of steam to restore the game files.