It's down for me, haven't changed anything since last night either. <_<; Has to be something o n their end, however I see that some people are in a few servers.
Not sure how or why? Perhaps because they were authenticated before the authentication servers went down and the effect is lasting but it seems to be on their end for sure. Hope to have it fixed soon as i've tried multiple servers to make sure it's not just me.
I'm also having this issue, I couldn't log in for a while, now realms is saying invalid session id, but before when I couldn't log in was saying invalid client token or something, I reset my pass, now I can get back on, but still can't open realms
I don't think it's because of 1.8 updating - there are still a lot of bugs in the recent snapshots... A week ago I saw a tweet from jeb that he will work on the launcher because "profiles" always confused people.