UPDATED: This maintenance has been moved from 6/25 to 6/29.
On Monday, June 29th, we will be performing maintenance on the console login and account systems starting at 10:30AM EDT/4:30PM CEST. During this time, you will be unable to log into the game or your game account but the megaservers will remain up. Those who are already in the game when the maintenance begins will be able to continue playing. We expect this maintenance to last approximately five hours—we will keep you updated if that changes.
Senior Community Manager (English) - The Elder Scrolls Online