@MojangSupport For a few hours now, I've been getting a message saying that "Authentication servers are down. Please try again later, sorry!" It's been a while, and I've checked online for server status, but I can't find any information about then servers being down.
We apologize for the inconvenience, but this is currently a known issue. The team is currently working on a fix that we hope to have out to everyone as soon as possible. Thank you for your patience while we work on the solution! ^SM