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Translated by Google:
IN THE MAIN MENU (ERROR CODE 315000)
Hello!
Now 12/01/2019
When starting the DIABLO III client on the main screen, I get an error.
“The player is not connected, or a service error has occurred. Please try again (error code 315000). ”
And if you hover over the button (ENTER THE GAME), it says (This feature is available only to the leader of the group).It also says, “The player has lost connection with the Battle, net service. Please reconnect (error code 300001). ”
Have you received a ban in chat ? if so, there are no current solutions. You will need to wait for the ban to end. There is a topic in russian on this issue here:
Or you may read the topic in English here: