Maintenance for the week of July 6:
• PC/Mac: No maintenance – July 6
• ESO Store and Account System for maintenance – July 8, 10:00AM EDT (14:00 UTC) - 12:00PM EDT (16:00 UTC)
Please see this article if this error message has persisted for you!
Thank you, @ZOS_Adrikoth. I discovered that it's something on my end. My ISP changed the terms of my internet plan and instituted a data cap yesterday. I'm livid.