ZOS_PeterT wrote: »Error 304 typically occurs after you have been booted from the ESO megaserver and are attempting to log back in. When this occurs, it can sometimes take a bit of time for the server to register that your character is no longer in game, so it won't allow you to log back in right away.
If you are encounter this error, you should wait a full 15-20 minutes before attempting to log in again. If the issue persists, check the Service Alerts page to see if the game is experiencing an outage or going through maintenance.